GB427254A - Improvements in or relating to electric lamps - Google Patents

Improvements in or relating to electric lamps

Info

Publication number
GB427254A
GB427254A GB27540/33A GB2754033A GB427254A GB 427254 A GB427254 A GB 427254A GB 27540/33 A GB27540/33 A GB 27540/33A GB 2754033 A GB2754033 A GB 2754033A GB 427254 A GB427254 A GB 427254A
Authority
GB
United Kingdom
Prior art keywords
indentation
furnished
bulb
filament
sides
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
GB27540/33A
Other languages
English (en)
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.)
Individual
Original Assignee
Individual
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 BE411645D priority Critical patent/BE411645A/xx
Priority to NL43150D priority patent/NL43150C/xx
Application filed by Individual filed Critical Individual
Priority to GB27540/33A priority patent/GB427254A/en
Publication of GB427254A publication Critical patent/GB427254A/en
Priority to US43757A priority patent/US2116722A/en
Priority to FR796006D priority patent/FR796006A/fr
Priority to DED71244D priority patent/DE662243C/de
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
GB27540/33A 1934-10-08 1934-10-08 Improvements in or relating to electric lamps Expired GB427254A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE411645D BE411645A (en:Method) 1934-10-08
NL43150D NL43150C (en:Method) 1934-10-08
GB27540/33A GB427254A (en) 1934-10-08 1934-10-08 Improvements in or relating to electric lamps
US43757A US2116722A (en) 1934-10-08 1935-10-05 Electric lamp
FR796006D FR796006A (fr) 1934-10-08 1935-10-07 Perfectionnements aux lampes électriques
DED71244D DE662243C (de) 1934-10-08 1935-10-08 Elektrische Gluehlampe mit einem in einer Ebene senkrecht zur Gluehlampenachse angeordneten Gluehfaden

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB27540/33A GB427254A (en) 1934-10-08 1934-10-08 Improvements in or relating to electric lamps

Publications (1)

Publication Number Publication Date
GB427254A true GB427254A (en) 1935-04-18

Family

ID=10261240

Family Applications (1)

Application Number Title Priority Date Filing Date
GB27540/33A Expired GB427254A (en) 1934-10-08 1934-10-08 Improvements in or relating to electric lamps

Country Status (6)

Country Link
US (1) US2116722A (en:Method)
BE (1) BE411645A (en:Method)
DE (1) DE662243C (en:Method)
FR (1) FR796006A (en:Method)
GB (1) GB427254A (en:Method)
NL (1) NL43150C (en:Method)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD313281S (en) 1987-12-22 1990-12-25 U.S. Philips Corporation Lamp
DE29915979U1 (de) 1999-09-10 1999-12-16 Czech, Andreas, 38102 Braunschweig Lampe
DE102005019829A1 (de) * 2005-04-28 2006-11-02 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Elektrische Lampe mit Halternoppen für den Leuchtkörper

Also Published As

Publication number Publication date
US2116722A (en) 1938-05-10
BE411645A (en:Method)
DE662243C (de) 1938-07-08
NL43150C (en:Method)
FR796006A (fr) 1936-03-27

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