EP 0533478 A1 19930324 - Incandescent lamps having integrally supported filaments.
Title (en)
Incandescent lamps having integrally supported filaments.
Title (de)
Glühlampen mit integrierten Glühwendelhaltern.
Title (fr)
Lampes à incandescence à supports de filaments intégrés.
Publication
Application
Priority
US 76155391 A 19910918
Abstract (en)
Incandescent lamps comprising a vitreous envelope containing an elongated, continuous tungsten wire filament having a plurality of filament segments and a plurality of integral filament supports for supporting the filament within the lamp envelope. The filament segments may be straight or coiled and are connected to each other by the integral supports. <IMAGE>
IPC 1-7
IPC 8 full level
G02B 5/28 (2006.01); H01K 1/14 (2006.01); H01K 1/18 (2006.01); H01K 1/24 (2006.01); H01K 1/32 (2006.01)
CPC (source: EP KR)
H01K 1/24 (2013.01 - EP KR)
Citation (search report)
- [X] US 3223875 A 19651214 - REINHOLD EGGERS
- [X] DE 1122165 B 19620118 - PATENT TREUHAND GES FUER ELEKTRISCHE GLUEHLAMPEN MBH
- [A] EP 0343721 A1 19891129 - PHILIPS NV [NL]
- [XP] PATENT ABSTRACTS OF JAPAN vol. 13, no. 184 (E-751)28 April 1989 & JP-A-10 10 569 ( TOSHIBA CORP. ) 13 January 1989
Designated contracting state (EPC)
BE DE ES FR GB IT NL
DOCDB simple family (publication)
EP 0533478 A1 19930324; CA 2076078 A1 19930319; JP H05205705 A 19930813; KR 930006764 A 19930421
DOCDB simple family (application)
EP 92308493 A 19920917; CA 2076078 A 19920813; JP 24698492 A 19920917; KR 920016902 A 19920917