US PATENT SUBCLASS 701 / 217
.~.~ Using dead-reckoning apparatus

Current as of: June, 1999
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701 /   HD   DATA PROCESSING: VEHICLES, NAVIGATION, AND RELATIVE LOCATION

200  DF  NAVIGATION {8}
207  DF  .~ Employing position determining equipment {8}
217.~.~ Using dead-reckoning apparatus

DEFINITION

Classification: 701/217

Using dead-reckoning apparatus:

(under subclass 207) Navigation system wherein position is determined from course and distance made from the last known position and known or estimated drift.