DURO CO

Active Patents

Total Holdings

Patent Holdings

Patent No.	Title	Status	Filing Date	Grant Date	Actions
US3025800A	Submersible type pump	Expired / Lapsed	1957-06-03	1962-03-20	Details
US2061789A	Deep well pump	Expired / Lapsed	1935-06-24	1936-11-24	Details
US1996136A	Apparatus for producing soft boiler water	Expired / Lapsed	1931-04-30	1935-04-02	Details
US1661886A	Pump	Expired / Lapsed	1927-03-02	1928-03-06	Details