CH311971A
(en )
1955-12-15
Electric light bulb with reflector.
AT181323B
(en )
1955-03-10
Gas discharge lamp with discharge heated glow cathode
AT181322B
(en )
1955-03-10
Gas discharge lamp with discharge heated glow cathode
AT171983B
(en )
1952-07-25
Gas discharge lamp with discharge heated glow cathode
AT171359B
(en )
1952-05-26
Gas discharge lamp with glow discharge cathode
AT181325B
(en )
1955-03-10
Gas discharge lamp with built-in filament lamp
AT177472B
(en )
1954-02-10
Gas discharge lamp with built-in bulb
AT174593B
(en )
1953-04-10
Gas incandescent light with glow network
AT177469B
(en )
1954-02-10
Low pressure gas discharge lamp with glow discharge cathode
AT173508B
(en )
1952-12-27
Electric low pressure gas discharge lamp with glow discharge cathode
CH316959A
(en )
1956-10-31
Safety gas discharge lamp
GR13969B
(en )
1952-11-25
ELECTRONIC LAMP LAUNCHER WITH IONIAN DISCHARGE.
GR13968B
(en )
1952-11-25
BUTTERFLOOR WITH ELECTRONIC LAUNCHER WITH IONIAN DISCHARGE LAMP.
NL168996B
(en )
INFRARED GLOW BULB.
AT172036B
(en )
1952-07-25
Glow lamp with controlled glow cover
AT187190B
(en )
1956-10-25
Cathode glow lamp
AT178969B
(en )
1954-07-10
Electric lamp with gas discharge tube
AT169756B
(en )
1951-12-27
Electric gas discharge lamp
AT187596B
(en )
1956-11-10
Safety gas discharge lamp
AT171644B
(en )
1952-06-25
Gas discharge lamp
CH305562A
(en )
1955-02-28
Lighting fixture with fluorescent tubes.
AT181403B
(en )
1955-03-25
Gas burner
AT181326B
(en )
1955-03-10
Electric gas discharge lamp with fluorescent coating and built-in filament lamp
AT172561B
(en )
1952-09-25
Electric gas discharge lamp
AT173179B
(en )
1952-11-25
Electric gas discharge lamp