FR696846A - Electric discharge tubes - Google Patents

Electric discharge tubes

Info

Publication number: FR696846A
Authority: FR; France
Prior art keywords: electric discharge; discharge tubes; tubes; electric; discharge
Prior art date: 1929-06-08
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.)

1929-06-08

Filing date

1930-06-07

Publication date

1931-01-07

1930-06-07 Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV

1931-01-07 Application granted granted Critical

1931-01-07 Publication of FR696846A publication Critical patent/FR696846A/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
- H01J61/02—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

FR696846D 1929-06-08 1930-06-07 Electric discharge tubes Expired FR696846A (en)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL696846X		1929-06-08

Publications (1)

Publication Number	Publication Date
FR696846A true FR696846A (en)	1931-01-07

Family

ID=19808899

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
FR696846D Expired FR696846A (en)	1929-06-08	1930-06-07	Electric discharge tubes

Country Status (1)

Country	Link
FR (1)	FR696846A (en)

1930
- 1930-06-07 FR FR696846D patent/FR696846A/en not_active Expired

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