CH77704A
(en )
1918-05-16
Platinum-free fuse wire for incandescent lamps and apparatus with an oxygen-free glass envelope and the process for producing this wire
CH70971A
(en )
1915-11-16
Process for the production of incandescent bodies for hanging incandescent light
CH80466A
(en )
1919-03-01
Process for the manufacture of tungsten incandescent lamps
CH46765A
(en )
1910-04-16
Metal filament brackets for electric light bulbs and method of making the same
CH52472A
(en )
1911-11-16
Process for the production of filament lamps
AT32814B
(en )
1908-05-11
Process for the production of metallic illuminants for electric light bulbs.
CH59749A
(en )
1913-06-02
Process for manufacturing incandescent mantles
CH73965A
(en )
1916-12-16
Incandescent bodies for electric light bulbs
CH48516A
(en )
1910-11-01
Process for the production of gas incandescent light bulbs
CH70212A
(en )
1915-09-01
Method of replacing the filaments of electric light bulbs
CH66000A
(en )
1914-08-01
Process for the production of incandescent bodies
AT75516B
(en )
1919-02-25
Process for the manufacture of base enamels.
CH54036A
(en )
1912-04-16
Tungsten wire for electric light bulbs and process for its manufacture
CH65431A
(en )
1914-06-16
Process for the production of filament lamps
CH72174A
(en )
1916-04-17
Process for the production of enamels
CH69478A
(en )
1915-06-16
Process for the production of hollow bodies with inner lining
CH75422A
(en )
1917-07-16
Process for the production of glazed asbestos-cement articles
CH76711A
(en )
1918-05-16
Process for the production of wire drawing dies
AT80098B
(en )
1920-02-25
Process for the production of inorganically insulatedMethod for the production of inorganically insulated coils. en coils.
CH70797A
(en )
1915-10-16
Process for making diaphanous watercolors
CH71298A
(en )
1915-12-16
Process for making stained glass
CH72640A
(en )
1916-06-16
Process for the production of macroscopic permanent specimens
AT75645B
(en )
1919-02-25
Process for the production of two or more part porcelain insulators.
CH70730A
(en )
1915-10-16
Machine for the production of hollow glass objects from glass tubes
CH73144A
(en )
1916-08-16
Electric incandescent lamp and method and apparatus for making same