Patent Explorer
Browse, filter, and analyze 2 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3882855A | Retractor for soft tissue for example brain tissue | Heyer Schulte Corp | Expired / Lapsed | 1973-11-12 | 1975-05-13 | 1993-11-12 | 0.0 yrs | 13 | |
| US3827439A | Plug valve for physiological shunt systems | Heyer Schulte Corp | Expired / Lapsed | 1972-10-30 | 1974-08-06 | 1992-10-30 | 0.0 yrs | 21 |