W H MINER Inc
W H MINERActive Patents
0
Total Holdings
10
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3369802A | Adjustable damped spring | Expired / Lapsed | 1966-02-02 | 1968-02-20 | 2 | Details |
| US2620178A | Friction shock absorber for railway car truck springs | Expired / Lapsed | 1949-03-30 | 1952-12-02 | 0 | Details |
| US2430494A | Resilient car-end buffer | Expired / Lapsed | 1944-09-08 | 1947-11-11 | 0 | Details |
| US2146023A | Draft and buffer gear | Expired / Lapsed | 1935-12-19 | 1939-02-07 | 0 | Details |
| US1985369A | Shock absorber | Expired / Lapsed | 1932-05-31 | 1934-12-25 | 0 | Details |
| US1921624A | Testing apparatus | Expired / Lapsed | 1930-12-03 | 1933-08-08 | 0 | Details |
| US1860539A | Car construction | Expired / Lapsed | 1927-12-29 | 1932-05-31 | 0 | Details |
| US1688649A | Shock absorber | Expired / Lapsed | 1926-07-15 | 1928-10-23 | 0 | Details |
| US1513129A | Hand brake | Expired / Lapsed | 1922-12-30 | 1924-10-28 | 0 | Details |
| US1508118A | Friction shock-absorbing mechanism | Expired / Lapsed | 1921-09-08 | 1924-09-09 | 0 | Details |