GB247619A
(cs )
1900-01-01
US1432553A
(en )
1922-10-17
Production of color music and other luminous effects and apparatus therefor
US1434727A
(en )
1922-11-07
System of electric lighting
US1401608A
(en )
1921-12-27
Illum nating attachment for keyboard musical instruments
US1961748A
(en )
1934-06-05
Electric cathode glow lamp
US1221590A
(en )
1917-04-03
Indicating electric switch.
GB288090A
(en )
1928-04-05
Improvements in electric imitation coal fires
GB252229A
(en )
1926-05-12
Improvements in or relating to electric alarm systems
GB191120794A
(en )
1912-09-05
Improvements connected with Series Electrical Lighting.
ES208469A1
(es )
1953-06-01
Mejoras introducidas en los interruptores de efluvios para el encebado de lamparas fluorescentes
GB360595A
(en )
1931-11-12
Improvements in or relating to electric signalling systems
ES2071557R
(cs )
1997-05-01
GB190006826A
(en )
1901-02-16
Improvements in Switches for Electric Currents.
US521924A
(en )
1894-06-26
wright
ES8104884A1
(es )
1981-04-16
Cuadro de mando para una instalacion de alumbrado electrico
US689711A
(en )
1901-12-24
Electric visual-signal apparatus.
GB191011559A
(en )
1911-05-04
Improvements in Stage Arc Lamps.
GB190925288A
(en )
1910-09-01
Improvements in connection with Installations of Electric Incandescent Lamps Connected in Series.
GB428399A
(en )
1935-05-13
Improvements in or relating to electrical control systems for illumination apparatusassociated with musical instruments and producing spectacular effects
GB346460A
(en )
1931-04-16
Improvements in the electric illumination of pianos
GB855937A
(en )
1960-12-14
Improvements in or relating to circuit arrangements for operating electric lamps
GB107767A
(en )
1918-06-27
Improvements in the Production of Colour Music and Apparatus therefor.
GB190004926A
(en )
1901-03-02
Improvements in Automatic Time Switches.
GB190811772A
(en )
1909-03-25
Improvements in Flash Advertising Signs.
GB190903252A
(en )
1909-07-15
Improvements in Electric Flash Lamps.