← Back to Companies

Hart & Hegeman Manufacturing Co

Hart & Heg

Active Patents

0

Total Holdings

4

Patent Holdings

Filter in Explorer →

Patent No.	Title	Status	Filing Date	Grant Date	Claims	Actions
US1710576A	Spring for electric snap switches	Expired / Lapsed	1926-06-04	1929-04-23	0	Details
US1282816A	Electric snap-switch.	Expired / Lapsed	1918-01-24	1918-10-29	0	Details
US1121293A	Magnetic lamp-support.	Expired / Lapsed	1912-07-12	1914-12-15	0	Details
US1058051A	Electric switch.	Expired / Lapsed	1912-06-20	1913-04-08	0	Details