Patent Explorer
Browse, filter, and analyze 3 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3360613A | Editing system utilizing recirculation means | HYMAN HURVITZ | Expired / Lapsed | 1963-07-16 | 1967-12-26 | 1983-07-16 | 0.0 yrs | 2 | |
| US3323230A | Language teacher | HYMAN HURVITZ | Expired / Lapsed | 1964-07-09 | 1967-06-06 | 1984-07-09 | 0.0 yrs | 2 | |
| US3234666A | Teaching machine | HYMAN HURVITZ | Expired / Lapsed | 1963-10-21 | 1966-02-15 | 1983-10-21 | 0.0 yrs | 2 |