Patent Explorer
Browse, filter, and analyze 2 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3899265A | Method and apparatus to perforate pipe | Enviri Corp | Expired / Lapsed | 1973-12-27 | 1975-08-12 | 1993-12-27 | 0.0 yrs | 10 | |
| US3741390A | Tertiary filter | Enviri Corp | Expired / Lapsed | 1971-12-13 | 1973-06-26 | 1991-12-13 | 0.0 yrs | 12 |