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Critchlow; David N. Patent Filings

Critchlow; David N.

Patent Applications and Registrations

Patent applications and USPTO patent grants for Critchlow; David N..The latest application filed is for "subscriber unit for wireless digital subscriber communication system".

Company Profile
0.13.0
  • Critchlow; David N. - San Diego CA
*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.
Patent Activity
PatentDate
Subscriber unit for wireless digital subscriber communication system
Grant 5,325,396 - Critchlow , et al. June 28, 1
1994-06-28
Modem for fading digital channels affected by multipath
Grant 5,311,545 - Critchlow May 10, 1
1994-05-10
System and method for minimizing frequency offsets between digital communication stations
Grant 5,276,706 - Critchlow January 4, 1
1994-01-04
Subscriber unit for wireless digital telephone system
Grant 5,177,741 - Critchlow , et al. January 5, 1
1993-01-05
Subscriber unit for wireless digital subscriber communication system
Grant 5,146,473 - Critchlow , et al. September 8, 1
1992-09-08
Digital time-multiplexed quadrature frequency upconverter
Grant 5,101,418 - Critchlow , et al. March 31, 1
1992-03-31
Subscriber unit for wireless digital subscriber communication system
Grant 5,008,900 - Critchlow , et al. April 16, 1
1991-04-16
Subscriber unit for wireless digital telephone system
Grant 4,994,802 - Critchlow , et al. February 19, 1
1991-02-19
Digital signals and frequency correction in a digital wireless system
Grant 4,893,317 - Critchlow , et al. January 9, 1
1990-01-09
AM equalizer circuit for digital systems
Grant 4,881,240 - Critchlow , et al. November 14, 1
1989-11-14
Subscriber unit for wireless digital telephone system
Grant 4,825,448 - Critchlow , et al. April 25, 1
1989-04-25
Modem for RF subscriber telephone system
Grant 4,764,940 - Paneth , et al. * August 16, 1
1988-08-16
Modem for RF subscriber telephone system
Grant 4,644,561 - Paneth , et al. February 17, 1
1987-02-17

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