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HAAS DAVID J TRUSTOR

HAAS DAVID
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US5058088A Time indicator Expired / Lapsed 1990-01-04 1991-10-15 34 Details
US4903254A Time indicator enhancement method Expired / Lapsed 1989-08-31 1990-02-20 18 Details