Patent Explorer
Browse, filter, and analyze 2 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US1825157A | Method and apparatus for hydraulically separating materials | ANTHRACITE SEPARATOR CO | Expired / Lapsed | 1926-12-03 | 1931-09-29 | 1946-12-03 | 0.0 yrs | 0 | |
| US1708029A | Spiral lowering chute and method of manufacture | ANTHRACITE SEPARATOR CO | Expired / Lapsed | 1925-02-21 | 1929-04-09 | 1945-02-21 | 0.0 yrs | 0 |