CH58517A
(en )
1913-03-17
Device for regenerating electric light bulbs
CH69155A
(en )
1915-06-01
Device for scanning electrical cartridges
CH71627A
(en )
1916-02-01
Holders for electric light bulbs
CH54570A
(en )
1912-06-01
Device for regulating electric arc lamps
CH73429A
(en )
1917-03-01
Replaceable electrical lighting device on dignallanterns for railways
CH65625A
(en )
1914-07-01
Method and device for manufacturing electric incandescent lamps
CH74730A
(en )
1917-04-02
Device for making ropes
CH73508A
(en )
1916-10-16
Method and device for venting electric incandescent lamps and other glass vessels
DK17329C
(en )
1913-05-19
Wire stand for electric light bulbs.
FR484913A
(en )
1917-11-22
Filtration apparatus
CH72184A
(en )
1916-09-16
Device for forming loopholes
FR482671A
(en )
1917-04-12
Electrical current transformation system
FR431286A
(en )
1911-11-07
Electrical conductor system
AT77282B
(en )
1919-07-25
Process for removing moisture residues from electric light bulbs with metallic luminous bodies.
CH56998A
(en )
1912-12-02
Device for the electrical heating of liquids
FR432839A
(en )
1911-12-16
Adjustable electric lamps
CH65017A
(en )
1914-05-16
Device for lighting lamps
FI4165A
(en )
1910-09-29
Electric light
DK22731C
(en )
1917-12-31
Device for Porcelain Rings for Socket Electric Light Bulbs.
CH70212A
(en )
1915-09-01
Method of replacing the filaments of electric light bulbs
NL1029C
(en )
1916-01-15
Fitting for electric light bulbs
CH58301A
(en )
1913-03-01
Electrical installation for the optional operation of apparatus
CH64790A
(en )
1914-05-01
Holder for the filament of electric light bulbs
CH72557A
(en )
1916-06-02
Process for removing moisture residues from electric light bulbs with a metallic luminous element
CH47859A
(en )
1910-08-16
Device for the automatic control of electrical systems