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Hettrick Manufacturing Co

Hettrick M
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2044862A Glider structure Expired / Lapsed 1935-02-04 1936-06-23 0 Details
US2017170A Glider frame Expired / Lapsed 1934-12-05 1935-10-15 0 Details