Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Control circuit for telephone receiver and transmitter

Control circuit for telephone receiver and transmitter

US Patent 4472601 · Granted Sep 18, 1984

Estimated economic value: $1,485,000 ⓘ

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Plastic vehicle-interior-part with an impact module2014
Machine such as a gas turbine engine2014
Capacitive sensing in displacement type pointing devices2011
Re-centering mechanism for an input device2010
Zone two fiber optic cable2008
Climbing frame2007
Single-use fiber optic cable2006
Automatic antenna-switching apparatus and system2006
Optical surface mount technology package2006
Light fixture2004
Mold apparatus and method2003
Convertible modular lantern2001