FR664744A - Improvements applicable to electronic discharge tubes - Google Patents

Improvements applicable to electronic discharge tubes

Info

Publication number
FR664744A
FR664744A FR664744DA FR664744A FR 664744 A FR664744 A FR 664744A FR 664744D A FR664744D A FR 664744DA FR 664744 A FR664744 A FR 664744A
Authority
FR
France
Prior art keywords
discharge tubes
electronic discharge
improvements applicable
applicable
electronic
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston SA
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 Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR664744A publication Critical patent/FR664744A/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
FR664744D 1927-11-16 1928-11-14 Improvements applicable to electronic discharge tubes Expired FR664744A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US300614XA 1927-11-16 1927-11-16

Publications (1)

Publication Number Publication Date
FR664744A true FR664744A (en) 1929-09-06

Family

ID=21852299

Family Applications (1)

Application Number Title Priority Date Filing Date
FR664744D Expired FR664744A (en) 1927-11-16 1928-11-14 Improvements applicable to electronic discharge tubes

Country Status (4)

Country Link
BE (1) BE355841A (en)
FR (1) FR664744A (en)
GB (1) GB300614A (en)
NL (1) NL24130C (en)

Also Published As

Publication number Publication date
GB300614A (en) 1929-04-25
BE355841A (en)
NL24130C (en)

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