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James B Clow & Sons

James B Cl
Active Patents
0
Total Holdings
2

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2233223A Test plug Expired / Lapsed 1938-03-11 1941-02-25 0 Details
US2099722A Pipe joint Expired / Lapsed 1936-01-02 1937-11-23 0 Details