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Clayton Mark and Co

Clayton Ma
Active Patents
0
Total Holdings
3

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2489715A Packing Expired / Lapsed 1944-11-18 1949-11-29 0 Details
US2287540A Surface welding Expired / Lapsed 1940-08-12 1942-06-23 0 Details
US2188326A Electric welding Expired / Lapsed 1936-06-26 1940-01-30 0 Details