FR775170A - Manufacturing process of cathodes for discharge lamps - Google Patents

Manufacturing process of cathodes for discharge lamps

Info

Publication number
FR775170A
FR775170A FR775170DA FR775170A FR 775170 A FR775170 A FR 775170A FR 775170D A FR775170D A FR 775170DA FR 775170 A FR775170 A FR 775170A
Authority
FR
France
Prior art keywords
cathodes
manufacturing process
discharge lamps
lamps
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Application granted granted Critical
Publication of FR775170A publication Critical patent/FR775170A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • H01J9/042—Manufacture, activation of the emissive part

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
FR775170D 1933-11-03 1934-06-30 Manufacturing process of cathodes for discharge lamps Expired FR775170A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE445948X 1933-11-03

Publications (1)

Publication Number Publication Date
FR775170A true FR775170A (en) 1934-12-21

Family

ID=6537818

Family Applications (1)

Application Number Title Priority Date Filing Date
FR775170D Expired FR775170A (en) 1933-11-03 1934-06-30 Manufacturing process of cathodes for discharge lamps

Country Status (2)

Country Link
FR (1) FR775170A (en)
GB (1) GB445948A (en)

Also Published As

Publication number Publication date
GB445948A (en) 1936-04-22

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