FR660637A - Improvement in electronic lamps - Google Patents

Improvement in electronic lamps

Info

Publication number
FR660637A
FR660637A FR660637DA FR660637A FR 660637 A FR660637 A FR 660637A FR 660637D A FR660637D A FR 660637DA FR 660637 A FR660637 A FR 660637A
Authority
FR
France
Prior art keywords
improvement
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi Co Ltd
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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Application granted granted Critical
Publication of FR660637A publication Critical patent/FR660637A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J21/00—Vacuum tubes
    • H01J21/36—Tubes with flat electrodes, e.g. disc electrode
FR660637D 1927-09-23 1928-09-19 Improvement in electronic lamps Expired FR660637A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB660637X 1927-09-23

Publications (1)

Publication Number Publication Date
FR660637A true FR660637A (en) 1929-07-13

Family

ID=10490884

Family Applications (1)

Application Number Title Priority Date Filing Date
FR660637D Expired FR660637A (en) 1927-09-23 1928-09-19 Improvement in electronic lamps

Country Status (1)

Country Link
FR (1) FR660637A (en)

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