FR844263A - Improvements in the manufacture of helical filaments - Google Patents

Improvements in the manufacture of helical filaments

Info

Publication number
FR844263A
FR844263A FR844263DA FR844263A FR 844263 A FR844263 A FR 844263A FR 844263D A FR844263D A FR 844263DA FR 844263 A FR844263 A FR 844263A
Authority
FR
France
Prior art keywords
manufacture
helical filaments
filaments
helical
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.)
Alfred Hofmann & Co
Original Assignee
Alfred Hofmann & Co
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 Alfred Hofmann & Co filed Critical Alfred Hofmann & Co
Application granted granted Critical
Publication of FR844263A publication Critical patent/FR844263A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/02—Manufacture of incandescent bodies
    • H01K3/04—Machines therefor

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
FR844263D 1937-10-15 1938-10-03 Improvements in the manufacture of helical filaments Expired FR844263A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US844263XA 1937-10-15 1937-10-15

Publications (1)

Publication Number Publication Date
FR844263A true FR844263A (en) 1939-07-21

Family

ID=22184894

Family Applications (1)

Application Number Title Priority Date Filing Date
FR844263D Expired FR844263A (en) 1937-10-15 1938-10-03 Improvements in the manufacture of helical filaments

Country Status (1)

Country Link
FR (1) FR844263A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996086A (en) * 1959-12-16 1961-08-15 Sylvania Electric Prod Heater slug reducer

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996086A (en) * 1959-12-16 1961-08-15 Sylvania Electric Prod Heater slug reducer

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