FR697838A - Improvements to electronic discharge tubes - Google Patents

Improvements to electronic discharge tubes

Info

Publication number
FR697838A
FR697838A FR697838DA FR697838A FR 697838 A FR697838 A FR 697838A FR 697838D A FR697838D A FR 697838DA FR 697838 A FR697838 A FR 697838A
Authority
FR
France
Prior art keywords
discharge tubes
electronic discharge
electronic
tubes
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.)
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
Priority claimed from US373632A external-priority patent/US1794283A/en
Application filed by Compagnie Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR697838A publication Critical patent/FR697838A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/067—Main electrodes for low-pressure discharge lamps
    • H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
FR697838D 1929-06-25 1930-06-24 Improvements to electronic discharge tubes Expired FR697838A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US373632A US1794283A (en) 1929-06-25 1929-06-25 Rectifying apparatus
US483949A US1951150A (en) 1929-06-25 1930-09-23 Gas conduction device

Publications (1)

Publication Number Publication Date
FR697838A true FR697838A (en) 1931-01-22

Family

ID=27006257

Family Applications (3)

Application Number Title Priority Date Filing Date
FR697838D Expired FR697838A (en) 1929-06-25 1930-06-24 Improvements to electronic discharge tubes
FR40029D Expired FR40029E (en) 1929-06-25 1931-03-25 Improvements to electronic discharge tubes
FR40808D Expired FR40808E (en) 1929-06-25 1931-09-23 Improvements to electronic discharge tubes

Family Applications After (2)

Application Number Title Priority Date Filing Date
FR40029D Expired FR40029E (en) 1929-06-25 1931-03-25 Improvements to electronic discharge tubes
FR40808D Expired FR40808E (en) 1929-06-25 1931-09-23 Improvements to electronic discharge tubes

Country Status (4)

Country Link
US (1) US1951150A (en)
BE (1) BE371407A (en)
FR (3) FR697838A (en)
GB (2) GB354452A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE764007C (en) * 1937-10-09 1954-05-10 Siemens Schuckertwerke A G Electric gas or vapor discharge vessel controlled in its work performance
US2419902A (en) * 1944-03-10 1947-04-29 Sylvania Electric Prod Fluorescent electric discharge lamp
US2478119A (en) * 1945-04-20 1949-08-02 Gen Motors Corp Gaseous discharge tube

Also Published As

Publication number Publication date
US1951150A (en) 1934-03-13
BE371407A (en)
FR40029E (en) 1932-03-25
FR40808E (en) 1932-08-23
GB354452A (en) 1931-08-13
GB389157A (en) 1933-03-16

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