FR713617A
(en )
1931-10-30
Mercury vapor luminescent lamps
DK45018C
(en )
1931-12-21
Device for lamp luminaires.
DK41820C
(en )
1930-03-10
Reflector device for Incandescent lamps.
DK43321C
(en )
1930-11-10
Device for Assembly of Lighting Luminaires.
DK44518C
(en )
1931-08-24
Lighting system with an electric fluorescent lamp with Column discharge.
DK47859C
(en )
1933-10-09
Electric lighting device with a discharge tube acting as a fluorescent lamp.
DK44201C
(en )
1931-06-08
Transformer for Operation of Fluorescent lamps.
DK43601C
(en )
1931-01-19
System with several fluorescent lamps.
DK44132C
(en )
1931-05-18
Lighting device consisting of an electric fluorescent lamp and a reflector.
DK45783C
(en )
1932-06-13
Lighting fixture for electric lamps.
DK47199C
(en )
1933-04-10
Ultraviolet Light Radiation Lamp.
DK44345C
(en )
1931-07-13
Electric Discharge Tube for Emitting Beams.
DK47434C
(en )
1933-06-12
Shielding device for reflector lamps.
ES101074A1
(en )
1927-03-01
Reflector device for incandescent lamps.
DK37167C
(en )
1927-02-21
Fluorescent lamps.
ES107191A1
(en )
1928-06-16
A device for incandescent lamps.
DK38897C
(en )
1928-06-18
Reflector device for Incandescent lamps.
DK43756C
(en )
1931-02-23
Shield with an opening placed therein for receiving a luminous discharge tube.
DK49369C
(en )
1934-10-08
Reflector device for Incandescent lamps.
DK42640C
(en )
1930-07-21
Shade holder for electric lamps.
FR652649A
(en )
1929-03-11
Device for incandescent lamps
DK42790C
(en )
1930-08-18
Device for lamps for advertising purposes.
ES109230A1
(en )
1928-10-01
Mercury vapor lamp.
ES109963A1
(en )
1928-12-16
Diffuser-distributor light device for electric incandescent lamps.
ES106764A1
(en )
1928-05-16
A device for sealing incandescent lamps.