FR849138A - Improvements to grid-screen lamps - Google Patents

Improvements to grid-screen lamps

Info

Publication number
FR849138A
FR849138A FR849138DA FR849138A FR 849138 A FR849138 A FR 849138A FR 849138D A FR849138D A FR 849138DA FR 849138 A FR849138 A FR 849138A
Authority
FR
France
Prior art keywords
grid
lamps
screen
screen 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.)
Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH
Original Assignee
Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten 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 Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH filed Critical Fides Gesellschaft fuer die Verwaltung und Verwertung von Gewerblichen Schutzrechten mbH
Application granted granted Critical
Publication of FR849138A publication Critical patent/FR849138A/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
FR849138D 1938-01-22 1939-01-20 Improvements to grid-screen lamps Expired FR849138A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE849138X 1938-01-22

Publications (1)

Publication Number Publication Date
FR849138A true FR849138A (en) 1939-11-14

Family

ID=6775778

Family Applications (1)

Application Number Title Priority Date Filing Date
FR849138D Expired FR849138A (en) 1938-01-22 1939-01-20 Improvements to grid-screen lamps

Country Status (1)

Country Link
FR (1) FR849138A (en)

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