FR21994E - Oscillographe cathodique - Google Patents

Oscillographe cathodique

Info

Publication number
FR21994E
FR21994E FR21994A FR21994DA FR21994E FR 21994 E FR21994 E FR 21994E FR 21994 A FR21994 A FR 21994A FR 21994D A FR21994D A FR 21994DA FR 21994 E FR21994 E FR 21994E
Authority
FR
France
Prior art keywords
oscillograph
cathodic
cathodic oscillograph
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
FR21994A
Other languages
English (en)
Inventor
Alexandre-Eugene Dufour
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.)
ALEXANDRE-EUGENE DUFOUR
Original Assignee
ALEXANDRE-EUGENE DUFOUR
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 ALEXANDRE-EUGENE DUFOUR filed Critical ALEXANDRE-EUGENE DUFOUR
Application granted granted Critical
Publication of FR21994E publication Critical patent/FR21994E/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/865—Vacuum locks
    • H01J29/866—Devices for introducing a recording support into the vessel
FR21994A 1919-12-18 1919-12-18 Oscillographe cathodique Expired FR21994E (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR21994T 1919-12-18

Publications (1)

Publication Number Publication Date
FR21994E true FR21994E (fr) 1921-04-21

Family

ID=8660940

Family Applications (1)

Application Number Title Priority Date Filing Date
FR21994A Expired FR21994E (fr) 1919-12-18 1919-12-18 Oscillographe cathodique

Country Status (1)

Country Link
FR (1) FR21994E (fr)

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