FR733929A
(en )
1932-10-14
Improvements to devices for transforming sound vibrations into variations of electrical energy
FR854334A
(en )
1940-04-10
Improvements relating to power plant regulation devices
FR590361A
(en )
1925-06-16
Improvements to devices for automatic power regulation of an electrical installation
FR602010A
(en )
1926-03-11
Improvement in devices to improve the power factor of an electrical installation
FR554241A
(en )
1923-06-07
Device for automatic power regulation of an electrical installation
FR820548A
(en )
1937-11-13
Electric power regulator devices
FR780939A
(en )
1935-05-06
Improvements to devices for transforming acoustic energy into electrical energy
FR516240A
(en )
1921-04-15
Removable device for the installation of electrical equipment
FR733557A
(en )
1932-10-07
Improvements to electrical connection devices
FR894358A
(en )
1944-12-21
equipment for automatic adjustment to constant values of electrical or electrically representable quantities
FR618163A
(en )
1927-03-04
Improvements to electric lighting devices
FR577740A
(en )
1924-09-10
Improvements to embedded junction boxes for electric lighting
BE427005A
(en )
1938-04-30
Improvements to cables for the transmission of electrical energy
FR506113A
(en )
1920-08-14
Improvements to electric lighting installations for automobiles
FR630362A
(en )
1927-12-01
Improvements to electric lighting installations
FR632297A
(en )
1928-01-06
Electrical installation to produce direct current
FR653181A
(en )
1929-03-18
Bypass circuit breaker for installation of electric lighting lines
FR573196A
(en )
1924-06-19
Watertight socket for electric lighting of railway signals
FR764834A
(en )
1934-05-29
Improvements to electrical devices for the creation of forces
FR585468A
(en )
1925-03-02
Improvements to clutch devices for power transmission
FR592446A
(en )
1925-08-03
Improvements to intermittent electric lighting devices
FR564855A
(en )
1924-01-14
Improvements made to electric vehicle lighting installations
FR593750A
(en )
1925-08-29
Electrical installation for gas purification
FR598058A
(en )
1925-12-05
Electrical installation for lighting and for starting motors
FR880024A
(en )
1943-03-11
Electrical signaling installation for vehicle trains