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n5google.co.
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processing method for GPS receiversUS4894662 *14 Apr 198616 Jan 1990Western Atlas International, Inc.Method and system for determining position on a moving platform, such as a ship, using signals from GPS satellitesUS4928106 *14 Jul 198822 May 1990Ashtech Telesis, Inc.Global positioning system receiver with improved radio frequency and digital processingUS4972431 *25 Sep 198920 Nov 1990Magnavox Go
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