AT26305B
(en )
1906-11-10
Process for the production of self-regenerating carbon filaments for electric light bulbs.
CH43541A
(en )
1909-05-17
Process for the production of metal-containing filaments for electric incandescent lamps
AT32814B
(en )
1908-05-11
Process for the production of metallic illuminants for electric light bulbs.
CH44730A
(en )
1909-09-01
Process for the regeneration of blackened carbon filament light bulbs
CH38082A
(en )
1907-08-31
Raw filament for making filaments for electric light bulbs
CH41966A
(en )
1908-12-16
Process for the production of carbon-free incandescent lamp filaments
CH38083A
(en )
1907-08-31
Raw thread for producing filaments for electric light bulbs
CH48516A
(en )
1910-11-01
Process for the production of gas incandescent light bulbs
CH37396A
(en )
1907-05-31
Filament for making filaments for electric light bulbs
CH37397A
(en )
1907-05-31
Filament for making filaments for electric light bulbs
CH36561A
(en )
1907-01-31
Device for the production of thin metallic coatings on carbon threads for electric light bulbs
AT25226B
(en )
1906-08-10
Process for the production of gas incandescent light stumps.
CH45392A
(en )
1909-11-16
Process for the production of incandescent bodies for gas incandescent light
CH46247A
(en )
1910-02-16
Process for the production of filaments from tungsten metal for incandescent lamps
CH70971A
(en )
1915-11-16
Process for the production of incandescent bodies for hanging incandescent light
CH36562A
(en )
1907-01-31
Raw filament for electric light bulbs
AT32452B
(en )
1908-04-10
Process for the manufacture of filaments for electric light.
AT46651B
(en )
1911-02-25
Process for the manufacture of tubes.
CH36981A
(en )
1907-03-31
Raw thread for the production of incandescent bodies for electric lamps made of difficult to melt metals
CH65431A
(en )
1914-06-16
Process for the production of filament lamps
AT31969B
(en )
1908-02-25
Process for treating the hoses intended for the manufacture of incandescent mantles by means of acids, alkalis or saline solutions in order to produce constrictions.
CH52472A
(en )
1911-11-16
Process for the production of filament lamps
CH46765A
(en )
1910-04-16
Metal filament brackets for electric light bulbs and method of making the same
FR401669A
(en )
1909-09-08
Process for the regeneration of blackened carbon filament electric lamps
AT32028B
(en )
1908-02-25
Process for the production of incandescent bodies.