NL184538B
(en )
LAMP LUMINAIRE.
DK86827C
(en )
1959-02-02
Arc lamp cathode carbon with two parallel wicks.
NL184813B
(en )
FLUORESCENT LAMP.
AT188797B
(en )
1957-02-11
Arc lamp cathode
AT191994B
(en )
1957-09-25
Arc lamp cathode
DK78686C
(en )
1955-01-03
Negative high power arc carbon.
DK81193C
(en )
1956-10-01
Negative high power arc carbon.
FR1114163A
(en )
1956-04-09
electron emitting electrode
AT187190B
(en )
1956-10-25
Cathode glow lamp
DK81519C
(en )
1956-11-26
System with two parallel-connected fluorescent lamps.
GR16155B
(en )
1955-03-30
SPECIAL ELECTRIC LAMP WITH VARIOUS LIGHTING LIGHTING.
ES39362U
(en )
1954-01-01
Cathode for electric arc lamps (Machine-translation by Google Translate, not legally binding)
ES224740A1
(en )
1956-01-16
Improvements in or relating to collector electrodes for klystron tubes
GR14133B
(en )
1953-01-23
NEGATIVE CARBON HEADLIGHTS.
FR1108083A
(en )
1956-01-09
Improvements to electric lamps
AT191436B
(en )
1957-08-26
Graphite anode
DK82658C
(en )
1957-04-08
Positive arc electrode with Beck effect.
FR886058A
(en )
1943-10-04
Carbon regenerator
ES31583U
(en )
1952-07-16
Positive electric arc electrode with beek effect (Machine-translation by Google Translate, not legally binding)
GR14328B
(en )
1953-04-01
SPECIAL TYPE OF LAMPS FOR SAVING ELECTRICITY.
GR14392B
(en )
1953-04-29
IMPROVEMENTS TO COLD DOWN LAMPS.
GR14246B
(en )
1953-03-05
LIGHTING LAMPS AFTER TWO INCLUDING PARTS.
FR1035480A
(en )
1953-08-25
activated carbon electrode
DK88113C
(en )
1959-11-09
Electron lamp for lighting purposes.
ES34771Y
(en )
1953-07-16
Lampholder with switch