FR861694A - Process and devices for sealing envelopes, more especially in the manufacture of electric lamps - Google Patents

Process and devices for sealing envelopes, more especially in the manufacture of electric lamps

Info

Publication number
FR861694A
FR861694A FR861694DA FR861694A FR 861694 A FR861694 A FR 861694A FR 861694D A FR861694D A FR 861694DA FR 861694 A FR861694 A FR 861694A
Authority
FR
France
Prior art keywords
manufacture
devices
electric lamps
sealing envelopes
envelopes
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 des Lampes
Original Assignee
Compagnie des Lampes
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 des Lampes filed Critical Compagnie des Lampes
Application granted granted Critical
Publication of FR861694A publication Critical patent/FR861694A/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
    • H01J9/40—Closing vessels
FR861694D 1938-11-16 1939-11-16 Process and devices for sealing envelopes, more especially in the manufacture of electric lamps Expired FR861694A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US240795A US2248647A (en) 1938-11-16 1938-11-16 Method and apparatus for sealing envelopes

Publications (1)

Publication Number Publication Date
FR861694A true FR861694A (en) 1941-02-14

Family

ID=22907975

Family Applications (1)

Application Number Title Priority Date Filing Date
FR861694D Expired FR861694A (en) 1938-11-16 1939-11-16 Process and devices for sealing envelopes, more especially in the manufacture of electric lamps

Country Status (4)

Country Link
US (1) US2248647A (en)
CH (1) CH217625A (en)
DE (1) DE715212C (en)
FR (1) FR861694A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE507222A (en) * 1950-11-21
NL248352A (en) * 1959-02-18
GB908421A (en) * 1960-03-02 1962-10-17 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Method of and apparatus for tipping off the exhaust apertures of electric lamps and the like

Also Published As

Publication number Publication date
US2248647A (en) 1941-07-08
CH217625A (en) 1941-10-31
DE715212C (en) 1941-12-17

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