FR839858A - Tubes photoélectriques - Google Patents

Tubes photoélectriques

Info

Publication number
FR839858A
FR839858A FR839858DA FR839858A FR 839858 A FR839858 A FR 839858A FR 839858D A FR839858D A FR 839858DA FR 839858 A FR839858 A FR 839858A
Authority
FR
France
Prior art keywords
photoelectric tubes
photoelectric
tubes
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
English (en)
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 FR839858A publication Critical patent/FR839858A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J40/00—Photoelectric discharge tubes not involving the ionisation of a gas
    • H01J40/02—Details
    • H01J40/04—Electrodes
    • H01J40/06—Photo-emissive cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/12—Manufacture of electrodes or electrode systems of photo-emissive cathodes; of secondary-emission electrodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Glass Compositions (AREA)
FR839858D 1937-06-26 1938-06-25 Tubes photoélectriques Expired FR839858A (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US839858XA 1937-06-26 1937-06-26
US150456A US2151797A (en) 1937-06-26 1937-06-26 Photoelectric tube

Publications (1)

Publication Number Publication Date
FR839858A true FR839858A (fr) 1939-04-13

Family

ID=26769996

Family Applications (1)

Application Number Title Priority Date Filing Date
FR839858D Expired FR839858A (fr) 1937-06-26 1938-06-25 Tubes photoélectriques

Country Status (2)

Country Link
US (1) US2151797A (fr)
FR (1) FR839858A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2835841A (en) * 1955-09-08 1958-05-20 Gen Electric Getter support structure
US4126489A (en) * 1973-07-17 1978-11-21 Varian Associates, Inc. Method of making cathode heaters
US3936532A (en) * 1974-02-08 1976-02-03 Oregon Graduate Center For Study And Research Activation of thin wire emitters for field ionization/field desorption mass spectrometry
US9886727B2 (en) 2010-11-11 2018-02-06 Ikorongo Technology, LLC Automatic check-ins and status updates

Also Published As

Publication number Publication date
US2151797A (en) 1939-03-28

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