GB459362A - Improvements in electric incandescent lamps - Google Patents

Improvements in electric incandescent lamps

Info

Publication number
GB459362A
GB459362A GB18783/35A GB1878335A GB459362A GB 459362 A GB459362 A GB 459362A GB 18783/35 A GB18783/35 A GB 18783/35A GB 1878335 A GB1878335 A GB 1878335A GB 459362 A GB459362 A GB 459362A
Authority
GB
United Kingdom
Prior art keywords
bulb
plane
centre
parts
shaped
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
GB18783/35A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB459362A publication Critical patent/GB459362A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K1/00—Details
    • H01K1/28—Envelopes; Vessels
    • H01K1/32—Envelopes; Vessels provided with coatings on the walls; Vessels or coatings thereon characterised by the material thereof
    • H01K1/325—Reflecting coating

Landscapes

  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Elements Other Than Lenses (AREA)
GB18783/35A 1934-07-26 1935-07-01 Improvements in electric incandescent lamps Expired GB459362A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL459362X 1934-07-26

Publications (1)

Publication Number Publication Date
GB459362A true GB459362A (en) 1937-01-01

Family

ID=19786374

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18783/35A Expired GB459362A (en) 1934-07-26 1935-07-01 Improvements in electric incandescent lamps

Country Status (6)

Country Link
US (1) US2106079A (forum.php)
BE (1) BE410339A (forum.php)
DE (1) DE694811C (forum.php)
FR (1) FR792373A (forum.php)
GB (1) GB459362A (forum.php)
NL (1) NL47905C (forum.php)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD321404S (en) 1990-03-29 1991-11-05 Falburg Films Corporation Light bulb

Also Published As

Publication number Publication date
DE694811C (de) 1940-08-08
US2106079A (en) 1938-01-18
FR792373A (fr) 1935-12-30
BE410339A (forum.php)
NL47905C (forum.php)

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