DE69216195D1
(de )
1997-02-06
Ultra-Hochspannungsschalter
US1432553A
(en )
1922-10-17
Production of color music and other luminous effects and apparatus therefor
US1401608A
(en )
1921-12-27
Illum nating attachment for keyboard musical instruments
US1961748A
(en )
1934-06-05
Electric cathode glow lamp
US2019075A
(en )
1935-10-29
Bell ringing circuit and switch therefor
GB191505768A
(en )
1916-02-03
Improvements in Electric Lighting.
GB191120794A
(en )
1912-09-05
Improvements connected with Series Electrical Lighting.
GB360595A
(en )
1931-11-12
Improvements in or relating to electric signalling systems
ES2071557B1
(es )
1997-12-01
Un sistema para la reduccion de consumo de energia electrica en redes de alumbrado, publico y privado.
GB190804066A
(en )
1909-01-07
Improvements in connection with Series-parallel Electric-lighting Circuits.
US2761980A
(en )
1956-09-04
Impedance apparatus for producing rapid irregular changes in current flow
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
SU145123A1
(ru )
1961-11-30
Устройство дл октавного удвоени мелодии
US514480A
(en )
1894-02-13
Cut-out
US689711A
(en )
1901-12-24
Electric visual-signal apparatus.
GB190117363A
(en )
1902-08-28
A Luminous Press-button for Electric Bells for Indicating When the Attendant is Coming.
PL35076B1
(enExample )
1952-04-30
Stearn et al.
1898
Continuation of discussion on “On the manufacture of lamps and other apparatus for 200-volt circuits”
GB428399A
(en )
1935-05-13
Improvements in or relating to electrical control systems for illumination apparatusassociated with musical instruments and producing spectacular effects
Harting
1879
THE FERAE NATURAE OF THE LONDON PARKS.
GB190811772A
(en )
1909-03-25
Improvements in Flash Advertising Signs.
GB190903252A
(en )
1909-07-15
Improvements in Electric Flash Lamps.
GB189808495A
(en )
1899-04-12
Improvements in Electric Switches and Fuses.