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Butler Manufacturing Co

Butler Man
Active Patents
0
Total Holdings
9

Patent Holdings

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Patent No. Title Status Filing Date Grant Date Claims Actions
US4064485A Digital load control circuit and method for power monitorin… Expired / Lapsed 1976-07-22 1977-12-20 21 Details
US4034233A Power monitoring and regulating circuit and method having a… Expired / Lapsed 1976-07-22 1977-07-05 12 Details
US3789201A Simulated load forecast and control apparatus Expired / Lapsed 1972-05-18 1974-01-29 13 Details
US3566566A Frictionally secured trench duct cover and partition Expired / Lapsed 1969-08-14 1971-03-02 0 Details
US3514525A Single and dual service fittings Expired / Lapsed 1968-10-14 1970-05-26 0 Details
US3290845A Prefabricated insulated panel system Expired / Lapsed 1965-05-24 1966-12-13 2 Details
US2453531A Internal mandrel Expired / Lapsed 1945-04-27 1948-11-09 0 Details
US2245382A Spring assembly for tank vehicles Expired / Lapsed 1940-02-08 1941-06-10 0 Details
US1919448A Filter Expired / Lapsed 1930-02-15 1933-07-25 0 Details