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Ralph F. Eschenbach

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Differential doppler velocity GPS receiver

Communications: directive radio wave systems and devices (e.g. – Directive – Beacon or receiver
Patent

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Differential global positioning system using almanac data...

Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Reexamination Certificate

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Differential global positioning system using coarse GPS data...

Communications: directive radio wave systems and devices (e.g. – Directive – Including a satellite
Reexamination Certificate

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Flexible monitoring of location and motion

Communications: electrical – Continuously variable indicating – With meter reading
Reexamination Certificate

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Global positioning system course acquisition code receiver

Pulse or digital communications – Repeaters – Testing
Patent

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Profile ID: LFUS-PAI-P-481457

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