CH50617A
(en )
1911-06-16
Electric melting furnace for melting metals using two-phase alternating current
CH48302A
(en )
1910-10-01
Electric induction furnace
CH50424A
(en )
1911-06-01
Electric induction furnace
CH49492A
(en )
1911-02-16
Electric furnace
CH47705A
(en )
1910-08-01
Melting hearth for electric induction furnaces
CH41674A
(en )
1908-11-16
Electric melting furnace
CH42241A
(en )
1909-01-16
Electric melting furnace
FR416079A
(en )
1910-10-11
Improvements to electric induction melting furnaces
CH37145A
(en )
1907-04-30
Electric melting furnace
AT44766B
(en )
1910-11-10
Rotating electric melting furnace.
CH47324A
(en )
1910-06-16
Method for heating up electric induction furnaces for metallurgical purposes
CH12252A
(en )
1896-11-15
Electric melting furnace
AT68000B
(en )
1915-02-25
Electric melting furnace.
CH44427A
(en )
1909-08-02
Electric induction furnace for metallurgical purposes
CH44428A
(en )
1909-08-02
Electric induction furnace for three-phase operation
CH38246A
(en )
1907-09-30
Wind furnace for melting metals
AT80116B
(en )
1920-02-25
Electric arc furnace. Electric arc furnace.
CH53725A
(en )
1912-03-16
Electric quartz melting furnace
ES47040A1
(en )
1910-03-01
An electric induction melting furnace.
FR410655A
(en )
1910-05-26
Electric induction melting furnace
CH66595A
(en )
1914-09-16
Electric arc furnace
CH41960A
(en )
1908-12-16
Electric induction furnace
FR409540A
(en )
1910-04-25
Electric steel furnace
CH49681A
(en )
1911-03-01
Electric rectifier
FR401566A
(en )
1909-09-03
Electric current rectifier