Re32365
Metal target detection system
Patent #: 3972042
Issued on: 07/27/1976
Inventor: Johnson
Non-linear spread spectrum transmitter/receiver for a homing system
Patent #: 4053889
Issued on: 10/11/1977
Inventor: Johnson
Position determining apparatus and method
Patent #: 4114155
Issued on: 09/12/1978
Inventor: Raab
Adaptive antenna lobing on spread spectrum signals at negative S/N
Patent #: 4152702
Issued on: 05/01/1979
Inventor: Piesinger
In null steering apparatus a reference to spread spectrum signals
Patent #: 4156877
Issued on: 05/29/1979
Inventor: Piesinger
Passive navigation system with frequency coding
Patent #: 4188629
Issued on: 02/12/1980
Inventor: Johnson
Frequency hopping communication system
Patent #: 4193030
Issued on: 03/11/1980
Inventor: Rabow , et al.
Two-way communications system and method of synchronizing
Patent #: 4229741
Issued on: 10/21/1980
Inventor: Groth, Jr.
Multiple mixer spread spectrum modulation and method therefor
Patent #: 4447907
Issued on: 05/08/1984
Inventor: Bjornholt , et al.
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Auto-balance method and apparatus for suppression of residual lines in a transmitted spectrum
Patent #: 4479227
Issued on: 10/23/1984
Inventor: Bjornholt
Multiple channel data link system
Patent #: 4494238
Issued on: 01/15/1985
Inventor: Groth, Jr.
System and method employing two hop spread spectrum signal transmissions between small earth stations via a satellite and a large earth station and structure and method for synchronizing such transmissions
Patent #: 4532635
Issued on: 07/30/1985
Inventor: Mangulis
Frequency-hopping radio communications system
Patent #: 4554668
Issued on: 11/19/1985
Inventor: Deman , et al.
Apparatus for despreading a spread spectrum signal produced by a linear feedback shift register (LFSR)
Patent #: 4611333
Issued on: 09/09/1986
Inventor: McCallister , et al.
Synchronizing system for spread spectrum transmissions between small earth stations by satellite via an intermediate hop to a large earth station
Patent #: 4617674
Issued on: 10/14/1986
Inventor: Mangulis , et al.
Two way personal message system with extended coverage
Patent #: 4644351
Issued on: 02/17/1987
Inventor: Zabarsky , et al.
Time sharing frequency synthesizer
Patent #: 4694466
Issued on: 09/15/1987
Inventor: Kadin
Method of doppler searching in a digital GPS receiver
Patent #: 4701934
Issued on: 10/20/1987
Inventor: Jasper
Direction finding localization system
Patent #: 4728959
Issued on: 03/01/1988
Inventor: Maloney , et al.
Vehicle location system
Patent #: 4740792
Issued on: 04/26/1988
Inventor: Sagey , et al.
Interactive television and data transmission system
Patent #: 4750036
Issued on: 06/07/1988
Inventor: Martinez
Digital global positioning system receiver
Patent #: 4785463
Issued on: 11/15/1988
Inventor: Janc , et al.
Speak back paging system
Patent #: 4811379
Issued on: 03/07/1989
Inventor: Grandfield
Knowledge back pager with frequency control apparatus
Patent #: 4823123
Issued on: 04/18/1989
Inventor: Siwiak
Acknowledge back pager with adaptive variable transmitter output power
Patent #: 4825193
Issued on: 04/25/1989
Inventor: Siwiak , et al.
Voice paging system providing deferred paging capability
Patent #: 4868560
Issued on: 09/19/1989
Inventor: Oliwa , et al.
Frequency division multiplexed acknowledge back paging system
Patent #: 4875038
Issued on: 10/17/1989
Inventor: Siwiak, et al.
Code division multiplexed acknowledge back paging system
Patent #: 4882579
Issued on: 11/21/1989
Inventor: Siwiak
Acknowledge back pager with apparatus for controlling transmit frequency
Patent #: 4891637
Issued on: 01/02/1990
Inventor: Siwiak, et al.
Two-way data broadcast networks
Patent #: 4928177
Issued on: 05/22/1990
Inventor: Martinez
Dual satellite navigation system
Patent #: 5017926
Issued on: 05/21/1991
Inventor: Ames, et al.
Spread-spectrum multiplexed transmission system
Patent #: 5063560
Issued on: 11/05/1991
Inventor: Yerbury, et al.
Transmission system for sending two signals simultaneously on the same communications channel
Patent #: 5073899
Issued on: 12/17/1991
Inventor: Collier, et al.
Vehicle location system accuracy enhancement for airborne vehicles
Patent #: 5099245
Issued on: 03/24/1992
Inventor: Sagey
System and method for generating signal waveforms in a CDMA cellular telephone system
Patent #: 5103459
Issued on: 04/07/1992
Inventor: Gilhousen, et al.
Method and apparatus for cancelling spread-spectrum noise
Patent #: 5105435
Issued on: 04/14/1992
Inventor: Stilwell
Method and apparatus for providing signal synchronization in a spread spectrum communication system
Patent #: 5111478
Issued on: 05/05/1992
Inventor: McDonald
Acknowledge back paging system having the capability of matching variable length data messages to pager addresses
Patent #: 5142279
Issued on: 08/25/1992
Inventor: Jasinski, et al.
Signal overlap detection in a communication system
Patent #: 5144668
Issued on: 09/01/1992
Inventor: Malek, et al.
Global positioning system digital receiver
Patent #: 5148452
Issued on: 09/15/1992
Inventor: Kennedy, et al.
Method of and apparatus for acknowledging and answering a paging signal
Patent #: 5153582
Issued on: 10/06/1992
Inventor: Davis
Conference call feature for spread spectrum cordless telephone
Patent #: 5191593
Issued on: 03/02/1993
Inventor: McDonald, et al.
On-site system frequency sharing with trunking systems using spread spectrum
Patent #: 5193101
Issued on: 03/09/1993
Inventor: McDonald, et al.
Method and apparatus for improving detection of data bits in a slow frequency hopping communication system
Patent #: 5193102
Issued on: 03/09/1993
Inventor: Meidan, et al.
Method and apparatus for providing high data rate traffic channels in a spread spectrum communication system
Patent #: 5204876
Issued on: 04/20/1993
Inventor: Bruckert, et al.
Multiple user spread-spectrum communication system
Patent #: 5210771
Issued on: 05/11/1993
Inventor: Schaeffer, et al.
Pager with reverse paging facility
Patent #: 5335246
Issued on: 08/02/1994
Inventor: Yokev, et al.
Remote position determination system
Patent #: 5379047
Issued on: 01/03/1995
Inventor: Yokev, et al.
Low-power frequency-hopped spread spectrum reverse paging system Patent #: 5430759
Issued on: 07/04/1995
Inventor: Yokev, et al.
December 22, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
