← Back to Companies

Hays Manufacturing Co

Hays Manuf

Active Patents

0

Total Holdings

4

Patent Holdings

Filter in Explorer →

Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US3079675A	Inverted plug type valve	Expired / Lapsed	1959-04-28	1963-03-05	0	Details
US2719889A	Fluid flow responsive device	Expired / Lapsed	1950-01-27	1955-10-04	0	Details
US2629401A	Magnetically controlled packless valve	Expired / Lapsed	1947-10-08	1953-02-24	0	Details
US2554790A	Flow control device	Expired / Lapsed	1948-09-09	1951-05-29	0	Details