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Hays Corp

Hays Corp
Active Patents
0
Total Holdings
5

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US2763151A Differential oxygen analyzer Expired / Lapsed 1952-08-18 1956-09-18 0 Details
US2699069A Fluid pressure gauge Expired / Lapsed 1948-06-24 1955-01-11 0 Details
US2594716A Electronic program controller Expired / Lapsed 1948-05-22 1952-04-29 0 Details
US2438202A Adjustable cam Expired / Lapsed 1943-12-22 1948-03-23 0 Details
US2199013A Pressure gauge Expired / Lapsed 1937-05-22 1940-04-30 0 Details