Patent Explorer
Browse, filter, and analyze 3 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3977789A | Scanning differential photoelectric autocollimator | Zygo Corp | Expired / Lapsed | 1975-04-07 | 1976-08-31 | 1995-04-07 | 0.0 yrs | 7 | |
| US3907439A | Edge-sensing with a scanning laser beam | Zygo Corp | Expired / Lapsed | 1974-04-24 | 1975-09-23 | 1994-04-24 | 0.0 yrs | 3 | |
| US3885875A | Noncontact surface profilometer | Zygo Corp | Expired / Lapsed | 1974-07-29 | 1975-05-27 | 1994-07-29 | 0.0 yrs | 5 |