CH51185A
(en )
1911-08-01
Process for the decarburization of carbon-containing metal filaments for electric lamps
CH46765A
(en )
1910-04-16
Metal filament brackets for electric light bulbs and method of making the same
CH43541A
(en )
1909-05-17
Process for the production of metal-containing filaments for electric incandescent lamps
CH54036A
(en )
1912-04-16
Tungsten wire for electric light bulbs and process for its manufacture
AT65983B
(en )
1914-08-10
Process for the production of luminous bodies for electric incandescent lamps from refractory metals.
CH52472A
(en )
1911-11-16
Process for the production of filament lamps
CH53321A
(en )
1912-02-01
Process for the production of ground plates for electrical accumulators
CH51446A
(en )
1911-09-01
Process for the oxidation of nitrogen with the aid of electrical discharges
CH54174A
(en )
1912-05-01
Process for the manufacture of pliable electrolyte iron
CH68893A
(en )
1915-05-01
Electric gas lamp and method of making the same
CH66393A
(en )
1914-09-16
Process for the manufacture of metal sheaths on arc lamp coals
CH72051A
(en )
1916-03-16
Process for the electrical cleaning of gases by means of high voltage currents
CH54921A
(en )
1912-07-01
Carbon electrode for electric ovens
CH64572A
(en )
1914-04-01
Process for the production of protective covers for carbon electrodes, in particular for electric ovens
FR415875A
(en )
1910-10-06
Metal filament for electric lamps
CH55751A
(en )
1912-09-02
Process for the production of pure iron oxide
AT82991B
(en )
1921-02-25
Process for the production of hydrogen.
CH70212A
(en )
1915-09-01
Method of replacing the filaments of electric light bulbs
CH64570A
(en )
1914-04-16
Equivalent resistor for electric lamps
CH65431A
(en )
1914-06-16
Process for the production of filament lamps
ES49675A1
(en )
1911-02-16
An improved process for the manufacture of metallic filaments for incandescent electric lamps by means of the corresponding furnace.
FR13351E
(en )
1911-03-25
Process for decarburizing metal filaments for incandescent electric lamps
FR412048A
(en )
1910-07-01
Process for decarburizing metal filaments for incandescent electric lamps
CH48849A
(en )
1910-12-01
Process for the production of sparking metal alloys
CH57978A
(en )
1913-02-17
Process for the production of iron oxide electrodes