ROKO Corp
ROKO CorpActive Patents
0
Total Holdings
6
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2311212A | Bleeder construction | Expired / Lapsed | 1941-02-10 | 1943-02-16 | 0 | Details |
| US2133272A | Means for draining oil well tubing | Expired / Lapsed | 1935-02-11 | 1938-10-18 | 0 | Details |
| US2081224A | Pressure pump | Expired / Lapsed | 1934-10-08 | 1937-05-25 | 0 | Details |
| US2081222A | Valve for fluid operated pumps | Expired / Lapsed | 1934-04-11 | 1937-05-25 | 0 | Details |
| US2081221A | High pressure pump | Expired / Lapsed | 1933-01-31 | 1937-05-25 | 0 | Details |
| US2046770A | Filtering device | Expired / Lapsed | 1933-01-31 | 1936-07-07 | 0 | Details |