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Butler National Corp

Butler Nat
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US3691361A Area navigation system for automatically selecting waypoint… Expired / Lapsed 1970-11-13 1972-09-12 15 Details
US3495241A Navigation system for correcting slant range errors Expired / Lapsed 1968-06-10 1970-02-10 0 Details