FR645272A - Improvements to electric vacuum tube devices - Google Patents

Improvements to electric vacuum tube devices

Info

Publication number
FR645272A
FR645272A FR645272DA FR645272A FR 645272 A FR645272 A FR 645272A FR 645272D A FR645272D A FR 645272DA FR 645272 A FR645272 A FR 645272A
Authority
FR
France
Prior art keywords
vacuum tube
electric vacuum
tube devices
devices
electric
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 FR645272A publication Critical patent/FR645272A/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
    • H01J1/18—Supports; Vibration-damping arrangements
FR645272D 1926-11-09 1927-11-08 Improvements to electric vacuum tube devices Expired FR645272A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB28190/26A GB285537A (en) 1926-11-09 1926-11-09 Improvements in or relating to vacuum electric tube devices

Publications (1)

Publication Number Publication Date
FR645272A true FR645272A (en) 1928-10-23

Family

ID=10271707

Family Applications (1)

Application Number Title Priority Date Filing Date
FR645272D Expired FR645272A (en) 1926-11-09 1927-11-08 Improvements to electric vacuum tube devices

Country Status (3)

Country Link
US (1) US1872344A (en)
FR (1) FR645272A (en)
GB (1) GB285537A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2621996A (en) * 1946-10-26 1952-12-16 Rca Corp Method of making ultrahigh frequency electron discharge device
US2647298A (en) * 1947-03-28 1953-08-04 Rca Corp Ultrahigh-frequency electron discharge device
US3287080A (en) * 1963-06-27 1966-11-22 Rca Corp Electron tube mount and method of making the same

Also Published As

Publication number Publication date
GB285537A (en) 1928-02-09
US1872344A (en) 1932-08-16

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