FR749053A - Improvements to electronic lamps - Google Patents

Improvements to electronic lamps

Info

Publication number
FR749053A
FR749053A FR749053DA FR749053A FR 749053 A FR749053 A FR 749053A FR 749053D A FR749053D A FR 749053DA FR 749053 A FR749053 A FR 749053A
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)
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH
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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Application granted granted Critical
Publication of FR749053A publication Critical patent/FR749053A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/02—Tubes with a single discharge path
    • H01J21/06—Tubes with a single discharge path having electrostatic control means only
    • H01J21/065—Devices for short wave tubes
FR749053D 1933-01-14 1933-01-14 Improvements to electronic lamps Expired FR749053A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR749053T 1933-01-14

Publications (1)

Publication Number Publication Date
FR749053A true FR749053A (en) 1933-07-18

Family

ID=6649164

Family Applications (1)

Application Number Title Priority Date Filing Date
FR749053D Expired FR749053A (en) 1933-01-14 1933-01-14 Improvements to electronic lamps

Country Status (1)

Country Link
FR (1) FR749053A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2437941A (en) * 1942-04-11 1948-03-16 Hartford Nat Bank & Trust Co Electron discharge tube with partially coated grid
US2686885A (en) * 1949-11-26 1954-08-17 Sylvania Electric Prod Insulated coated grid for electron discharge devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2437941A (en) * 1942-04-11 1948-03-16 Hartford Nat Bank & Trust Co Electron discharge tube with partially coated grid
US2686885A (en) * 1949-11-26 1954-08-17 Sylvania Electric Prod Insulated coated grid for electron discharge devices

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