EP 0841687 A3 19980617 -
Publication
Application
Priority
- DE 19645960 A 19961107
- US 94952397 A 19971014
Abstract (en)
[origin: EP0841687A2] The discharge envelope (1), which is contoured to define an inner volume containing a light-emitting medium, has a longitudinal axis and 2 ends fitted with sealed electrical leads connected to a pair of spaced gas discharge electrodes. The inner wall of the discharge envelope is defined by a cylindrical central section (2) and 2 hemispherical end sections (3), the length (L) of the central section being less or equal to the radius (R) of each end section.
IPC 1-7
IPC 8 full level
H01J 61/88 (2006.01); H01J 61/30 (2006.01); H01J 61/82 (2006.01)
CPC (source: EP US)
H01J 61/30 (2013.01 - EP US); H01J 61/82 (2013.01 - EP US)
Citation (search report)
- [PA] RU 2079181 C1 19970510 - PRAVLENIE NT OBSHCHESTVA ENERG [SU]
- [A] US 4643690 A 19870217 - CARUSO NANCY J [US], et al
- [A] EP 0290043 A2 19881109 - GTE PROD CORP [US]
- [A] EP 0156385 A2 19851002 - GTE PROD CORP [US]
- [A] EP 0128551 A1 19841219 - GTE PROD CORP [US]
- [DA] GB 2085650 A 19820428 - MATSUSHITA ELECTRONICS CORP
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0841687 A2 19980513; EP 0841687 A3 19980617; EP 0841687 B1 20030108; CA 2218639 A1 19980507; CA 2218639 C 20051220; CN 1102798 C 20030305; CN 1182276 A 19980520; DE 19645960 A1 19980514; HU 220258 B 20011128; HU 9701882 D0 19980128; HU P9701882 A2 19980629; HU P9701882 A3 20000228; JP 3723676 B2 20051207; JP H10144261 A 19980529; US 5936351 A 19990810
DOCDB simple family (application)
EP 97117480 A 19971009; CA 2218639 A 19971020; CN 97122218 A 19971107; DE 19645960 A 19961107; HU P9701882 A 19971106; JP 31761797 A 19971104; US 94952397 A 19971014