FR662768A - Electric discharge tube - Google Patents

Electric discharge tube

Info

Publication number: FR662768A
Authority: FR; France
Prior art keywords: electric discharge; discharge tube; tube; electric; discharge
Prior art date: 1927-10-29
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.)

1927-10-29

Filing date

1928-10-22

Publication date

1929-08-12

1928-10-22 Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV

1929-08-12 Application granted granted Critical

1929-08-12 Publication of FR662768A publication Critical patent/FR662768A/en

Status Expired legal-status Critical Current

Classifications

- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
- H01J61/72—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of easily vaporisable metal vapour, e.g. mercury
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
- H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
- H01J61/20—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent mercury vapour

FR662768D 1927-10-29 1928-10-22 Electric discharge tube Expired FR662768A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL299704X		1927-10-29

Publications (1)

Publication Number	Publication Date
FR662768A true FR662768A (en)	1929-08-12

Family

ID=19783188

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR662768D Expired FR662768A (en)	1927-10-29	1928-10-22	Electric discharge tube

Country Status (3)

Country	Link
BE (1)	BE355094A (en)
FR (1)	FR662768A (en)
GB (1)	GB299704A (en)

0
- BE BE355094D patent/BE355094A/xx unknown
1928
- 1928-10-22 FR FR662768D patent/FR662768A/en not_active Expired
- 1928-10-22 GB GB30571/28A patent/GB299704A/en not_active Expired

Also Published As

Publication number	Publication date
BE355094A (en)
GB299704A (en)	1930-01-16

Similar Documents

Publication	Publication Date	Title
FR674313A (en)	1930-01-27	Electric discharge tube
FR686234A (en)	1930-07-23	Electric discharge tube
FR686414A (en)	1930-07-25	Electric discharge tube
FR649051A (en)	1928-12-18	Electric discharge tube
FR669314A (en)	1929-11-14	Electric discharge tube
FR685521A (en)	1930-07-11	Electric discharge tube
FR668025A (en)	1929-10-26	Electric discharge tube
FR658896A (en)	1929-06-20	Electric discharge tube
FR642557A (en)	1928-08-31	Electric discharge tube
FR717583A (en)	1932-01-11	Electric discharge tube
FR723374A (en)	1932-04-07	Electric discharge tube
FR672469A (en)	1929-12-28	Electric discharge tubes
FR663119A (en)	1929-08-16	Arc discharge tube
FR649326A (en)	1928-12-20	Electric discharge tube
FR662768A (en)	1929-08-12	Electric discharge tube
FR662717A (en)	1929-08-10	Electric discharge tube
FR658973A (en)	1929-06-22	Electric discharge tube
FR650700A (en)	1929-01-11	Electric discharge tube
FR645320A (en)	1928-10-23	Electric discharge tube
FR674565A (en)	1930-01-30	Electric discharge tube
FR665991A (en)	1929-09-25	Electric discharge tube
FR727891A (en)	1932-06-25	Electric discharge tube
FR640517A (en)	1928-07-16	Electric discharge tube
FR629627A (en)	1927-11-14	Electric discharge tube
FR645419A (en)	1928-10-25	Electric discharge tube