FR939426A - Electronic lamps - Google Patents

Electronic lamps

Info

Publication number
FR939426A
FR939426A FR939426DA FR939426A FR 939426 A FR939426 A FR 939426A FR 939426D A FR939426D A FR 939426DA FR 939426 A FR939426 A FR 939426A
Authority
FR
France
Prior art keywords
electronic lamps
lamps
electronic
Prior art date
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
French (fr)
Inventor
William Thomas Gibson
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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.)
Filing date
Publication date
Application filed by International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR939426A publication Critical patent/FR939426A/en
Expired legal-status Critical Current

Links

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
    • H01J1/15—Cathodes heated directly by an electric current
FR939426D 1939-01-06 1946-11-21 Electronic lamps Expired FR939426A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB51739A GB523574A (en) 1939-01-06 1939-01-06 Improvements relating to thermionic valves

Publications (1)

Publication Number Publication Date
FR939426A true FR939426A (en) 1948-11-15

Family

ID=9705751

Family Applications (1)

Application Number Title Priority Date Filing Date
FR939426D Expired FR939426A (en) 1939-01-06 1946-11-21 Electronic lamps

Country Status (3)

Country Link
BE (1) BE471303A (en)
FR (1) FR939426A (en)
GB (1) GB523574A (en)

Also Published As

Publication number Publication date
BE471303A (en)
GB523574A (en) 1940-07-17

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