FR587845A - Improvements to electric vacuum tubes - Google Patents

Improvements to electric vacuum tubes

Info

Publication number
FR587845A
FR587845A FR587845DA FR587845A FR 587845 A FR587845 A FR 587845A FR 587845D A FR587845D A FR 587845DA FR 587845 A FR587845 A FR 587845A
Authority
FR
France
Prior art keywords
electric vacuum
vacuum tubes
tubes
electric
vacuum
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.)
Metropolitan Vickers Electrical Co Ltd
Original Assignee
Metropolitan Vickers Electrical 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 Metropolitan Vickers Electrical Co Ltd filed Critical Metropolitan Vickers Electrical Co Ltd
Application granted granted Critical
Publication of FR587845A publication Critical patent/FR587845A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/15—Cathodes heated directly by an electric current
FR587845D 1923-11-09 1924-10-22 Improvements to electric vacuum tubes Expired FR587845A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28265/23A GB228638A (en) 1923-11-09 1923-11-09 Improvements in vacuum electric tube devices

Publications (1)

Publication Number Publication Date
FR587845A true FR587845A (en) 1925-04-24

Family

ID=10272908

Family Applications (1)

Application Number Title Priority Date Filing Date
FR587845D Expired FR587845A (en) 1923-11-09 1924-10-22 Improvements to electric vacuum tubes

Country Status (4)

Country Link
US (1) US1692573A (en)
DE (1) DE441997C (en)
FR (1) FR587845A (en)
GB (1) GB228638A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2469794A1 (en) * 1979-11-07 1981-05-22 Varian Associates MODULAR ELECTRONIC TUBE WITH CARBON GRID

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL169806C (en) * 1972-02-07 1982-08-16 Hoechst Ag WIRE SPRAY ELECTRODE FOR A CORONA DISCHARGE DEVICE.

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2469794A1 (en) * 1979-11-07 1981-05-22 Varian Associates MODULAR ELECTRONIC TUBE WITH CARBON GRID

Also Published As

Publication number Publication date
US1692573A (en) 1928-11-20
DE441997C (en) 1927-03-18
GB228638A (en) 1925-02-09

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