FR719242A - Improvements to electronic discharge devices - Google Patents

Improvements to electronic discharge devices

Info

Publication number
FR719242A
FR719242A FR719242DA FR719242A FR 719242 A FR719242 A FR 719242A FR 719242D A FR719242D A FR 719242DA FR 719242 A FR719242 A FR 719242A
Authority
FR
France
Prior art keywords
discharge devices
electronic discharge
electronic
devices
discharge
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.)
Thales SA
Original Assignee
Le Materiel Telephonique Thomson CSF
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 Le Materiel Telephonique Thomson CSF filed Critical Le Materiel Telephonique Thomson CSF
Application granted granted Critical
Publication of FR719242A publication Critical patent/FR719242A/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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
FR719242D 1930-08-01 1931-06-29 Improvements to electronic discharge devices Expired FR719242A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23217/30A GB360036A (en) 1930-08-01 1930-08-01 Improvements in or relating to electron discharge devices

Publications (1)

Publication Number Publication Date
FR719242A true FR719242A (en) 1932-02-03

Family

ID=10192051

Family Applications (1)

Application Number Title Priority Date Filing Date
FR719242D Expired FR719242A (en) 1930-08-01 1931-06-29 Improvements to electronic discharge devices

Country Status (3)

Country Link
US (1) US1904261A (en)
FR (1) FR719242A (en)
GB (1) GB360036A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2922688A (en) * 1952-06-28 1960-01-26 Edwin A Boyan Apparatus for recording electrically on heat-sensitive material

Also Published As

Publication number Publication date
GB360036A (en) 1931-11-02
US1904261A (en) 1933-04-18

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