US3287506A
(en )
1966-11-22
Semiconductor-based electro-acoustic transducer
GB1513431A
(en )
1978-06-07
Electrical switching arrangement suitable for an ultrasonic remote control device
SU528896A3
(ru )
1976-09-15
Коммутационна клавиатура
FR2304161A1
(fr )
1976-10-08
Interrupteur electrique, notamment pour touches de calculatrices electroniques
CH536518A
(fr )
1973-04-30
Commutateur à touche pour clavier
GB1317078A
(en )
1973-05-16
Organ keyboard switching system
GB1456113A
(en )
1976-11-17
Variable gain control circuits
US4101871A
(en )
1978-07-18
Touch-tone encoder unit for mobile radio transmitter
GB1067327A
(en )
1967-05-03
Improvements in or relating to electric organs
GB1356822A
(en )
1974-06-19
Electromechanical delay line with continuously adjustable delay
JPS56165350A
(en )
1981-12-18
Semiconductor device and manufacture thereof
ATE17910T1
(de )
1986-02-15
Elektrostatischer schallwandler.
EP0124862A3
(de )
1986-02-05
Tastenfeld
GB1412298A
(en )
1975-11-05
Electrical signal initiating keyboards
US3327045A
(en )
1967-06-20
Keying device for electronic organs
CH557623A
(de )
1974-12-31
Elektronischer schalter zum durchschalten von hochfrequenzsignalen.
FR2331211A2
(fr )
1977-06-03
Dispositif de commutation muni d'un condensateur a champ de dispersion
US3170020A
(en )
1965-02-16
Apparatus for producing bass sounds in electric musical instruments wherein contrabass voice can be obtained by special switch and circuit
US3336447A
(en )
1967-08-15
Electric organ chord switches including conducting vinyl plastic
GB1089188A
(en )
1967-11-01
Improvements in or relating to arrangements for switching electric circuits
SU291657A1
(ru )
1975-06-05
Резонансна система циклотрона
GB1304497A
(en:Method )
1973-01-24
SU452071A1
(ru )
1974-11-30
Электроныный коммутатор аналоговых сигналов
JPS5215231A
(en )
1977-02-04
Multifunction keyboard
US3544698A
(en )
1970-12-01
Electronic organ diode keying circuit