FR775737A - Indirectly heated cathode for electric discharge tubes - Google Patents

Indirectly heated cathode for electric discharge tubes

Info

Publication number: FR775737A
Authority: FR; France
Prior art keywords: electric discharge; discharge tubes; indirectly heated; heated cathode; cathode
Prior art date: 1933-07-13
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.): Expired

Application number

Other languages

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Koninklijke Philips NV

Original Assignee

Philips Gloeilampenfabrieken NV

Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)

1933-07-13

Filing date

1934-07-11

Publication date

1935-01-08

1934-07-11 Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV

1935-01-08 Application granted granted Critical

1935-01-08 Publication of FR775737A publication Critical patent/FR775737A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
- H01J1/02—Main electrodes
- H01J1/13—Solid thermionic cathodes
- H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
- H01J1/26—Supports for the emissive material

FR775737D 1933-07-13 1934-07-11 Indirectly heated cathode for electric discharge tubes Expired FR775737A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL430853X		1933-07-13

Publications (1)

Publication Number	Publication Date
FR775737A true FR775737A (en)	1935-01-08

Family

ID=19786148

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR775737D Expired FR775737A (en)	1933-07-13	1934-07-11	Indirectly heated cathode for electric discharge tubes

Country Status (5)

Country	Link
US (1)	US2057124A (en)
BE (1)	BE404192A (en)
FR (1)	FR775737A (en)
GB (1)	GB430853A (en)
NL (1)	NL40799C (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE855606C (en) *	1943-01-15	1952-11-13	Philips Nv	Electric discharge tubes and processes for their manufacture
US2889445A (en) *	1955-03-28	1959-06-02	Herman B Wolf	Electrically heated mat
US3062507A (en) *	1957-11-18	1962-11-06	Smith Corp A O	Multi-layer vessel having a heat transfer material disposed between layers
US3009044A (en) *	1960-07-11	1961-11-14	Doehler Hans	Electric resistance element for space heaters
GB970426A (en) *	1961-02-09	1964-09-23	Scholemann Ag	Improvements in electrically heated billet-containers for metal-extrusion or tube presses
US3662211A (en) *	1961-03-15	1972-05-09	Gen Electric	Cathode construction
US3958146A (en) *	1974-02-08	1976-05-18	Gte Sylvania Incorporated	Fast warm up picture tube cathode cap having high heat emissivity surface on the interior thereof
US4009409A (en) *	1975-09-02	1977-02-22	Gte Sylvania Incorporated	Fast warmup cathode and method of making same
US5156728A (en) *	1987-02-12	1992-10-20	Terumo Kabushiki Kaisha	Ion sensor

0
- NL NL40799D patent/NL40799C/xx active
- BE BE404192D patent/BE404192A/xx unknown
1934
- 1934-04-27 GB GB12783/34A patent/GB430853A/en not_active Expired
- 1934-05-02 US US723510A patent/US2057124A/en not_active Expired - Lifetime
- 1934-07-11 FR FR775737D patent/FR775737A/en not_active Expired

Also Published As

Publication number	Publication date
BE404192A (en)
NL40799C (en)
GB430853A (en)	1935-06-26
US2057124A (en)	1936-10-13

Similar Documents

Publication	Publication Date	Title
FR775737A (en)	1935-01-08	Indirectly heated cathode for electric discharge tubes
FR44875E (en)	1935-04-24	Electric discharge tube
FR772609A (en)	1934-11-02	Indirectly heated elongated cathode for thermionic tubes
FR45379E (en)	1935-07-26	Electric discharge tube
FR811528A (en)	1937-04-16	heating element for high voltage cathodes
FR771173A (en)	1934-10-02	Electric discharge tube
FR780700A (en)	1935-04-30	Electric discharge tube
FR815219A (en)	1937-07-08	Electric discharge tube
FR774589A (en)	1934-12-08	Indirectly heated cathode for electric discharge tubes
FR771172A (en)	1934-10-02	Electric discharge tube
FR774816A (en)	1934-12-14	Electric discharge tube
FR777506A (en)	1935-02-22	Indirectly heated cathode for electric discharge tubes
FR800344A (en)	1936-07-02	Indirectly heated cathode for electric discharge tube
FR793558A (en)	1936-01-27	Indirectly heated cathode for electric discharge tubes
FR777069A (en)	1935-02-11	Cathode for electric discharge tubes
FR735516A (en)	1932-11-10	Indirectly heated cathode electric discharge tube
FR786440A (en)	1935-09-03	Electric discharge tubes
FR771488A (en)	1934-10-09	Electric discharge tubes
FR48186E (en)	1937-11-03	Indirectly heated cathode for discharge tubes
FR786029A (en)	1935-08-24	Indirectly heated cathode for discharge tubes
FR780928A (en)	1935-05-06	Electric discharge tube
FR780964A (en)	1935-05-07	Electric discharge tube
FR782565A (en)	1935-06-07	Electric discharge tube
FR791661A (en)	1935-12-14	Indirectly heated cathode for electric discharge lamps or tubes
FR764494A (en)	1934-05-22	auxiliary electrode for electric discharge tubes