AT134366B
(en )
1933-07-25
Reflector lamp with adjustable electric light bulb in the reflector neck.
ES126764A1
(en )
1932-06-16
Incandescent electric lamp.
FR736042A
(en )
1932-11-18
Electric lamp globe with adjustable reflector
DK45855C
(en )
1932-06-27
Electric Bulb for Placement in Automobile Lights with Parabolic Reflectors.
ES118003A1
(en )
1930-06-16
Reflector electric lamp with incandescent lamp with adjustable position in the direction of the reflector axis.
ES128277A1
(en )
1932-12-01
Improvements introduced in the manufacture of caps for lamps for electric lighting.
GR3912B
(en )
1932-11-23
LIGHTING ELECTRIC LAMP WITH ALTERNATIVE LIGHTING WITH SWITCH ADJUSTMENT.
CH160286A
(en )
1933-02-28
Gas-filled electric light bulb.
DK48850C
(en )
1934-06-11
Electric Discharge Lamp.
CH189503A
(en )
1937-02-28
Electric floor lamp with multiple light sources.
ES128429A3
(en )
1932-12-01
Improvements in the electrodes of incandescent electric lamps.
FR748391A
(en )
1933-07-03
Light reflector
DK49340C
(en )
1934-10-01
Electric Bulb of the Reflector type.
ES116603A3
(en )
1930-02-16
Improvements in the construction of incandescent electric lamps.
ES119628A3
(en )
1930-10-16
Improvements in the manufacture of electric incandescent lamps.
DK32453C
(en )
1923-11-05
Electric Lamp with light scattering Container.
ES1427Y
(en )
1933-08-16
Electric lamp.
GR3713B
(en )
1932-07-06
ELECTRIC LAMP.
DK52067C
(en )
1936-08-24
Gas-filled electric light bulb.
CA309912A
(en )
1931-03-31
Electric reflector lamp
CA309913A
(en )
1931-03-31
Electric reflector lamp
ES119604A1
(en )
1930-11-16
Improvements introduced in electric incandescent lamps.
DK48454C
(en )
1934-02-26
Electric Projector Bulb.
DK46679C
(en )
1932-12-27
Gas-filled electric light bulb.
ES124090A1
(en )
1931-10-16
An electric incandescent lamp equipped with a resistor mounted in parallel with the filament.