FR1021953A - Improvements to gas-filled thermionic lamps - Google Patents

Improvements to gas-filled thermionic lamps

Info

Publication number
FR1021953A
FR1021953A FR1021953DA FR1021953A FR 1021953 A FR1021953 A FR 1021953A FR 1021953D A FR1021953D A FR 1021953DA FR 1021953 A FR1021953 A FR 1021953A
Authority
FR
France
Prior art keywords
lamps
gas
filled thermionic
thermionic
filled
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.)
MO Valve Co Ltd
Original Assignee
MO Valve 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 MO Valve Co Ltd filed Critical MO Valve Co Ltd
Application granted granted Critical
Publication of FR1021953A publication Critical patent/FR1021953A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/22—Means for obtaining or maintaining the desired pressure within the tube
    • H01J17/26—Means for producing, introducing, or replenishing gas or vapour during operation of the tube
FR1021953D 1949-04-20 1950-07-12 Improvements to gas-filled thermionic lamps Expired FR1021953A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1053549A GB663304A (en) 1949-04-20 1949-04-20 Improvements in or relating to gas-filled thermionic valves

Publications (1)

Publication Number Publication Date
FR1021953A true FR1021953A (en) 1953-02-26

Family

ID=9969616

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1021953D Expired FR1021953A (en) 1949-04-20 1950-07-12 Improvements to gas-filled thermionic lamps

Country Status (3)

Country Link
CH (1) CH288575A (en)
FR (1) FR1021953A (en)
GB (1) GB663304A (en)

Also Published As

Publication number Publication date
CH288575A (en) 1953-01-31
GB663304A (en) 1951-12-19

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