FR71754E - Improvements to lamps used in optical systems - Google Patents

Improvements to lamps used in optical systems

Info

Publication number
FR71754E
FR71754E FR71754DA FR71754E FR 71754 E FR71754 E FR 71754E FR 71754D A FR71754D A FR 71754DA FR 71754 E FR71754 E FR 71754E
Authority
FR
France
Prior art keywords
optical systems
lamps used
lamps
optical
systems
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.)
LAMPE NORMA
Original Assignee
LAMPE NORMA
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 LAMPE NORMA filed Critical LAMPE NORMA
Application granted granted Critical
Publication of FR71754E publication Critical patent/FR71754E/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
    • H01J9/34—Joining base to vessel

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Resistance Heating (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
FR71754D 1957-06-27 1957-06-27 Improvements to lamps used in optical systems Expired FR71754E (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1086803X 1957-06-27

Publications (1)

Publication Number Publication Date
FR71754E true FR71754E (en) 1960-01-19

Family

ID=9612952

Family Applications (1)

Application Number Title Priority Date Filing Date
FR71754D Expired FR71754E (en) 1957-06-27 1957-06-27 Improvements to lamps used in optical systems

Country Status (4)

Country Link
US (1) US2951734A (en)
DE (1) DE1086803B (en)
FR (1) FR71754E (en)
GB (1) GB881109A (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2428610A (en) * 1943-09-10 1947-10-07 Gen Electric Method and apparatus for manufacturing electric discharge devices
US2792271A (en) * 1950-08-16 1957-05-14 Gen Electric Method of making electric discharge device
US2749668A (en) * 1952-08-30 1956-06-12 Csf Method of sealing vacuum-tight envelopes

Also Published As

Publication number Publication date
DE1086803B (en) 1960-08-11
US2951734A (en) 1960-09-06
GB881109A (en) 1961-11-01

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