DK71081C
(en )
1950-06-06
Artificial, inorganic fluorescent material and process for its manufacture.
CH275958A
(en )
1951-06-15
Gas discharge lamp.
CH283643A
(en )
1952-06-15
Gas and / or vapor-filled electric discharge lamp.
DK76894C
(en )
1953-12-28
Fluorescent material, in particular for electric discharge lamps, and process for its manufacture.
DK79492C
(en )
1955-07-04
Fluorescent material, in particular for electric discharge lamps, and process for its manufacture.
CH293278A
(en )
1953-09-15
Electric discharge tube.
CH279459A
(en )
1951-11-30
Gas and / or vapor-filled electric discharge lamp.
CA466317A
(en )
1950-07-04
Gas discharge lamp
DK79202C
(en )
1955-05-02
Fastening device for indirectly heated cathodes in electric discharge pipes.
CH301209A
(en )
1954-08-31
Device for igniting several gas or vapor-filled main discharge tubes.
DK77836C
(en )
1954-07-19
Artificial luminescent material for electric discharges and methods for its manufacture.
AT169275B
(en )
1951-10-25
Electric gas discharge lamp, especially in the form of a festoon
CA466812A
(en )
1950-07-25
Moulded discharge lamp
AT169756B
(en )
1951-12-27
Electric gas discharge lamp
CH291654A
(en )
1953-06-30
Electric discharge tube.
AU157183B2
(en )
Electric discharge lighting plant, particularly for advertising purposes
DK73317C
(en )
1951-11-05
Insulation material and process for its manufacture.
AT169977B
(en )
1951-12-27
Fluorescent material, preferably for an electric discharge tube
AU149258B2
(en )
1951-05-03
Improvements in electric discharge lamps
CH303448A
(en )
1954-11-30
Electric lamp.
CA469325A
(en )
1950-11-14
Electric glow discharge lamps
CA463754A
(en )
1950-03-14
Fluorescent material
ES23974Y
(en )
1951-02-01
New fluorescent lamp.
IE20958L
(en )
1954-03-05
Luminescent discharge lamps
ES194990A1
(en )
1950-12-16
A PERFECTION IN THE MANUFACTURE OF CAPS FOR ELECTRICAL LAMPS.