CH43542A
(en )
1909-05-17
Process for the calcination of filaments for incandescent electric lamps
FR394302A
(en )
1909-01-20
Process for the manufacture of filaments of electric incandescent lamps
FR388161A
(en )
1908-08-04
Process for the production of filaments of metal alloys for electric incandescent lamps
FR394829A
(en )
1909-02-03
Process for mending the metal filaments of incandescent lamps
FR392536A
(en )
1908-11-28
Process for the manufacture of filaments of incandescent lamps for electric light
FR391722A
(en )
1908-11-07
Manufacturing process of filaments for incandescent electric lamps
FR382898A
(en )
1908-02-18
Process for the manufacture of filaments for incandescent electric lamps
FR383822A
(en )
1908-03-18
Process for the manufacture of filaments for incandescent electric lamps
FR401711A
(en )
1909-09-13
Process for the manufacture of incandescent lamps
FR380739A
(en )
1907-12-16
Process for the production of incandescent electric lamps
FR398247A
(en )
1909-05-29
Process for the production of flat metal filaments for incandescent lamps
FR434003A
(en )
1912-01-23
Process for the manufacture of electric incandescent lamps
FR406981A
(en )
1910-02-16
Manufacturing process of metal filaments for incandescent electric lamps
FR14360E
(en )
1911-11-27
Method and apparatus for the manufacture of filaments of incandescent lamps
FR392454A
(en )
1908-11-27
Method and apparatus for forming filaments of electric incandescent lamps
FR12119E
(en )
1910-07-20
Method for preventing the metallic filaments of electric incandescent lamps from volatilizing
FR412443A
(en )
1910-07-12
Process for decarbonizing metal filaments for incandescent electric lamps
FR418964A
(en )
1910-12-23
Process for the manufacture of incandescent lamps with metal filaments
FR430186A
(en )
1911-10-10
Process for the manufacture of filament supports for electric filament electric lamps
FR435701A
(en )
1912-03-08
Process for the manufacture of electric filament filament lamps
FR429850A
(en )
1911-10-02
Process for the manufacture of metal filaments for electric incandescent lamps
FR401669A
(en )
1909-09-08
Process for the regeneration of blackened carbon filament electric lamps
FR401307A
(en )
1909-08-26
Method of forming filaments of electric incandescent lamps
FR417469A
(en )
1910-11-15
Process for bending filaments intended for electric incandescent lamps
FR14105E
(en )
1911-09-23
Support for the metal filaments of incandescent electric lamps