FR837237A
(en )
1939-02-06
Improvements in the manufacture of electric lamps
FR706940A
(en )
1931-07-01
Improvements in electric heating apparatus, in particular wire and sheath type apparatus, and their manufacturing processes
FR764175A
(en )
1934-05-16
Electric cables and their manufacturing processes
FR834353A
(en )
1938-11-18
Improvements in the manufacture of electric cables
FR867185A
(en )
1941-10-03
Improvements in wire-and-sheath type electric heaters and their manufacturing processes
FR838493A
(en )
1939-03-07
Electric discharge tubes
FR682010A
(en )
1930-05-22
Improvements in precision electric lamps and their manufacturing processes
FR682746A
(en )
1930-06-02
Improvements in heating elements intended for electric discharge apparatus and in methods of manufacturing these elements
FR869279A
(en )
1942-01-28
Improvements in heating devices and in particular radiators
FR844723A
(en )
1939-07-31
Improvements in the manufacture of electric cables
FR694671A
(en )
1930-12-06
Improvements in electric heating devices and their manufacturing processes
FR875632A
(en )
1942-09-29
Improvements made to the connecting conductors of electrical resistance bars and their manufacturing processes
FR836760A
(en )
1939-01-25
Electric induction oven
FR840397A
(en )
1939-04-25
Electric discharge tubes and related provisions
FR827718A
(en )
1938-05-03
Reverberation oven
FR830738A
(en )
1938-08-08
Improvements in the manufacture of cables with concentric conductors
FR845498A
(en )
1939-08-24
Dry straightener with tubular straightening elements
FR834810A
(en )
1938-12-02
Further training in electric glass manufacturing
FR835419A
(en )
1938-12-21
Electric finned fan
FR866896A
(en )
1941-09-15
Electric or other heating stove
FR687290A
(en )
1930-08-06
Improvements in the manufacture of electrical resistances
FR25799E
(en )
1923-05-18
Improvements in electrical heating elements and their manufacturing processes
FR25827E
(en )
1923-05-28
Improvements in electrical heating elements and their manufacturing processes
FR39823E
(en )
1932-03-18
Improvements in self-decreasing electrical resistances and their manufacturing processes
FR703970A
(en )
1931-05-08
Improvements in self-decreasing electrical resistances and their manufacturing processes