FR662892A - Improvements to thermionic lamps - Google Patents

Improvements to thermionic lamps

Info

Publication number
FR662892A
FR662892A FR662892DA FR662892A FR 662892 A FR662892 A FR 662892A FR 662892D A FR662892D A FR 662892DA FR 662892 A FR662892 A FR 662892A
Authority
FR
France
Prior art keywords
thermionic
lamps
thermionic lamps
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 FR662892A publication Critical patent/FR662892A/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
FR662892D 1927-10-28 1928-10-25 Improvements to thermionic lamps Expired FR662892A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB662892X 1927-10-28

Publications (1)

Publication Number Publication Date
FR662892A true FR662892A (en) 1929-08-13

Family

ID=10491072

Family Applications (1)

Application Number Title Priority Date Filing Date
FR662892D Expired FR662892A (en) 1927-10-28 1928-10-25 Improvements to thermionic lamps

Country Status (1)

Country Link
FR (1) FR662892A (en)

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