GB733072A - Improvements in or relating to electric lamps - Google Patents

Improvements in or relating to electric lamps

Info

Publication number
GB733072A
GB733072A GB837952A GB837952A GB733072A GB 733072 A GB733072 A GB 733072A GB 837952 A GB837952 A GB 837952A GB 837952 A GB837952 A GB 837952A GB 733072 A GB733072 A GB 733072A
Authority
GB
United Kingdom
Prior art keywords
filament
corrugations
corrugated
wires
reflecting surface
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
GB837952A
Other languages
English (en)
Inventor
Dexter Parshall Cooper Jr
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.)
Polaroid Corp
International Polaroid Corp
Original Assignee
Polaroid Corp
International Polaroid Corp
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
Priority to BE510798D priority Critical patent/BE510798A/xx
Priority to US236411A priority patent/US2666158A/en
Application filed by Polaroid Corp, International Polaroid Corp filed Critical Polaroid Corp
Priority to GB837952A priority patent/GB733072A/en
Priority to FR1066091D priority patent/FR1066091A/fr
Priority to DEI5736A priority patent/DE1010168B/de
Publication of GB733072A publication Critical patent/GB733072A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/02—Incandescent bodies
    • H01K1/14—Incandescent bodies characterised by the shape

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
GB837952A 1951-07-12 1952-04-02 Improvements in or relating to electric lamps Expired GB733072A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BE510798D BE510798A (en(2012)) 1952-04-02
US236411A US2666158A (en) 1951-07-12 1951-07-12 Electric projection lamp
GB837952A GB733072A (en) 1952-04-02 1952-04-02 Improvements in or relating to electric lamps
FR1066091D FR1066091A (fr) 1952-04-02 1952-04-11 Perfectionnements apportés aux lampes électriques
DEI5736A DE1010168B (de) 1952-04-02 1952-04-12 Elektrische Gluehlampe od. dgl.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB837952A GB733072A (en) 1952-04-02 1952-04-02 Improvements in or relating to electric lamps

Publications (1)

Publication Number Publication Date
GB733072A true GB733072A (en) 1955-07-06

Family

ID=9851414

Family Applications (1)

Application Number Title Priority Date Filing Date
GB837952A Expired GB733072A (en) 1951-07-12 1952-04-02 Improvements in or relating to electric lamps

Country Status (3)

Country Link
BE (1) BE510798A (en(2012))
FR (1) FR1066091A (en(2012))
GB (1) GB733072A (en(2012))

Also Published As

Publication number Publication date
BE510798A (en(2012))
FR1066091A (fr) 1954-06-02

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