FR878052A - Improvements to devices comprising an electric discharge tube - Google Patents

Improvements to devices comprising an electric discharge tube

Info

Publication number: FR878052A
Authority: FR; France
Prior art keywords: devices; electric discharge; discharge tube; tube; electric
Prior art date: 1940-12-30
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.)

1940-12-30

Filing date

1941-12-29

Publication date

1943-01-11

1941-12-29 Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV

1943-01-11 Application granted granted Critical

1943-01-11 Publication of FR878052A publication Critical patent/FR878052A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J19/00—Details of vacuum tubes of the types covered by group H01J21/00
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J2893/00—Discharge tubes and lamps
- H01J2893/0001—Electrodes and electrode systems suitable for discharge tubes or lamps
- H01J2893/001—Non-constructive schematic arrangements

FR878052D 1940-12-30 1941-12-29 Improvements to devices comprising an electric discharge tube Expired FR878052A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL605355X		1940-12-30

Publications (1)

Publication Number	Publication Date
FR878052A true FR878052A (en)	1943-01-11

Family

ID=19787915

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR878052D Expired FR878052A (en)	1940-12-30	1941-12-29	Improvements to devices comprising an electric discharge tube

Country Status (5)

Country	Link
CH (1)	CH222894A (en)
DE (1)	DE851229C (en)
DK (1)	DK64451C (en)
FR (1)	FR878052A (en)
GB (1)	GB605355A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5844925A (en) *	1996-07-17	1998-12-01	Ericsson Inc.	Spiral scrambling

1941
- 1941-12-23 DK DK261741A patent/DK64451C/en active
- 1941-12-24 DE DEN2293D patent/DE851229C/en not_active Expired
- 1941-12-29 CH CH222894D patent/CH222894A/en unknown
- 1941-12-29 FR FR878052D patent/FR878052A/en not_active Expired
1945
- 1945-12-20 GB GB34504/45A patent/GB605355A/en not_active Expired

Also Published As

Publication number	Publication date
GB605355A (en)	1948-07-21
DE851229C (en)	1952-10-02
DK64451C (en)	1946-04-29
CH222894A (en)	1942-08-15

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