CH70111A
(en )
1915-09-16
Method and machine for the production of hollow, thin-walled glass objects, e.g. B. Bulbs for electric lighting
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
AT76380B
(en )
1919-05-10
Process and system for the production of pre-doughs.
AT69003B
(en )
1915-06-10
Process for the production of artificial center walls for honeycombs.
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
CH77440A
(en )
1918-04-16
Process for the production of insulating sleeves for transformers
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
CH41966A
(en )
1908-12-16
Process for the production of carbon-free incandescent lamp filaments
AT80098B
(en )
1920-02-25
Process for the production of inorganically insulatedMethod for the production of inorganically insulated coils. en coils.
AT88396B
(en )
1922-05-10
Process for the production of iron-free hard alloys.