GB1496678A
(en )
1977-12-30
Process for producing carbon fibres from mesophase pitch
DE235216C
(enrdf_load_stackoverflow )
US2030695A
(en )
1936-02-11
Electric lamp
DE217781C
(enrdf_load_stackoverflow )
US912245A
(en )
1909-02-09
Solder for incandescent-lamp filaments.
DE201461C
(enrdf_load_stackoverflow )
DE281015C
(enrdf_load_stackoverflow )
DE221211C
(enrdf_load_stackoverflow )
US597172A
(en )
1898-01-11
Mowsky
US1077827A
(en )
1913-11-04
Process of treating tungsten.
GB190906936A
(en )
1910-02-10
Improvements in Processes for Manufacturing Metal Filaments for Incandescent Electric Lamps.
DE236554C
(enrdf_load_stackoverflow )
US1023295A
(en )
1912-04-16
Manufacture of metallic filaments for incandescent electric lamps.
US829568A
(en )
1906-08-28
Incandescent-lamp filament and method of making the same.
US950067A
(en )
1910-02-22
Manufacture of gas for illuminating, heating, or power purposes.
US590514A
(en )
1897-09-21
Process of producing metallic carbids
US687079A
(en )
1901-11-19
Production of artificial stone from limestone.
US1604544A
(en )
1926-10-26
Special carbon for the starting of a voltaic arc with ultra violet rays
US896060A
(en )
1908-08-11
Filament for electric incandescent lamps and process of making the same.
GB190715510A
(en )
1908-07-02
Improved Process for the Manufacture of Illuminating Bodies for Electric Incandescence Lamps.
US1086428A
(en )
1914-02-10
Manufacture of electric filaments.
DE393706C
(de )
1924-04-07
Verfahren zur Erzeugung von Oxyden des Stickstoffs
AT35700B
(de )
1908-12-28
Verfahren zur Entfernung des Kohlenstoffs aus Rohfäden für die Herstellung von elektrischen Glühkörpern aus hochschmelzenden unedlen Metallen.
DE194653C
(enrdf_load_stackoverflow )
DE493778C
(de )
1930-03-12
Verfahren zur Herstellung von reinem Eisen