Patent Explorer
Browse, filter, and analyze 2 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2877338A | Method of adjusting the operating frequency of sealed piezoelectric crystals | JAMES KNIGHTS Co | Expired / Lapsed | 1954-10-22 | 1959-03-10 | 1974-10-22 | 0.0 yrs | 0 | |
| US2505121A | Method of finishing crystals | JAMES KNIGHTS Co | Expired / Lapsed | 1949-03-04 | 1950-04-25 | 1969-03-04 | 0.0 yrs | 0 |