Inventor

ROSEBROCK FREDERICK A

US3 patents

Patents

3 patents

US5226076AJul 6, 1993

Directional microphone assembly

AT & T BELL LAB153 citations96

USD323656SFeb 4, 1992

Wall-mounted, coinless public telephone

AT & T BELL LAB17 citations81

US5291541AMar 1, 1994

Coupling apparatus for telephone handsets

AT & T BELL LAB6 citations58