Patent Leaderboard
USPTO Patent Rankings Data through Dec 31, 2025
Home › Emergency alert communication system wherein emergency messages are received by a radio frequency receiver and routed to a telephone device

Emergency alert communication system wherein emergency messages are received by a radio frequency receiver and routed to a telephone device

US Patent 5917887 · Granted Jun 29, 1999

Assignee

Inventors

View full patent text on Google Patents →

More Patents by These Inventors

Homodyne optical sensor system incorporating a multi-phase beam combining system2018
Micro optical design for DWDM interleavers with narrow channel spacing2005
Ideographic keyboard and method2003
Encoder/decoder for emergency alert system1999
Ideographic typewriter and method1998
Optical fiber sensor having digital integrating detection system utilizing elect1994
Interferometric technique for measurement of nonreciprocal optical effects in a 1993
Interferometer utilizing superfluorescent optical source1992
Optical waveguide amplifier source gyroscope1992
Broadband optical fiber laser1990
Detector system for optical mouse1990
Sensor array and method of selective interferometric sensing by use of coherence1989