Inventor

NAVRATIL EMIL

DE4 patents

Patents

4 patents

US5442695AAug 15, 1995

Ringer circuit

SIEMENS AG2 citations58

US4894863AJan 16, 1990

Method for gain control in telephone sets having an electronic speech circuit, and apparatus for performing the method

SIEMENS AG6 citations54

US4847898AJul 11, 1989

Speech circuit configuration

SIEMENS AG3 citations54

US5402017AMar 28, 1995

Controllable circuit configuration for compensating fluctuations in an amplifier

SIEMENS AG0 citations48