FR788922A - Improvements in the manufacture of electric lamps - Google Patents

Improvements in the manufacture of electric lamps

Info

Publication number
FR788922A
FR788922A FR788922DA FR788922A FR 788922 A FR788922 A FR 788922A FR 788922D A FR788922D A FR 788922DA FR 788922 A FR788922 A FR 788922A
Authority
FR
France
Prior art keywords
manufacture
electric lamps
lamps
electric
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 FR788922A publication Critical patent/FR788922A/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
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/32—Sealing leading-in conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Fire-Extinguishing By Fire Departments, And Fire-Extinguishing Equipment And Control Thereof (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
FR788922D 1934-04-19 1935-04-17 Improvements in the manufacture of electric lamps Expired FR788922A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US721270A US2153404A (en) 1934-04-19 1934-04-19 Method of making stems for sealed electrical devices

Publications (1)

Publication Number Publication Date
FR788922A true FR788922A (en) 1935-10-19

Family

ID=24897264

Family Applications (1)

Application Number Title Priority Date Filing Date
FR788922D Expired FR788922A (en) 1934-04-19 1935-04-17 Improvements in the manufacture of electric lamps

Country Status (4)

Country Link
US (1) US2153404A (en)
DE (1) DE732225C (en)
FR (1) FR788922A (en)
GB (1) GB439927A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH234242A (en) * 1942-03-14 1944-09-15 Philips Nv Electric discharge tube.
GB563784A (en) * 1943-02-24 1944-08-30 Standard Telephones Cables Ltd Improvements in or relating to the sealing of wires into glass

Also Published As

Publication number Publication date
US2153404A (en) 1939-04-04
DE732225C (en) 1943-03-11
GB439927A (en) 1935-12-17

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