Inventor
BARDL ARTUR
DE7 patents
Patents
7 patentsUS5940498AAug 17, 1999
Electronic voice circuit configuration
SIEMENS AG33 citations89
US4695804ASep 22, 1987
Apparatus for generating a multi-frequency signal
SIEMENS AG9 citations71
US4446485AMay 1, 1984
Semiconductor circuit with clock-controlled charge displacement devices
SIEMENS AG3 citations59
US4399518AAug 16, 1983
Monolithically integrated semiconductor circuit
SIEMENS AG3 citations59
US5442695AAug 15, 1995
Ringer circuit
SIEMENS AG2 citations58
US4837827AJun 6, 1989
Method for transmitting two independent types of information and device for implementing the method
SIEMENS AG1 citations49
US5402017AMar 28, 1995
Controllable circuit configuration for compensating fluctuations in an amplifier
SIEMENS AG0 citations48