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Black Clawson Co

Black Claw
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2645347A Vortex separator for pulp Expired / Lapsed 1950-05-20 1953-07-14 0 Details
US2627788A Paper machinery Expired / Lapsed 1948-02-12 1953-02-10 0 Details