Patent Explorer
Browse, filter, and analyze 4 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US4225931A | Interpolation apparatus for digital electronic position measuring instrument | Dr Johannes Heidenhain GmbH | Expired / Lapsed | 1978-06-15 | 1980-09-30 | 1998-06-15 | 0.0 yrs | 11 | |
| US4120093A | Planar measuring instrument | Dr Johannes Heidenhain GmbH | Expired / Lapsed | 1976-10-21 | 1978-10-17 | 1996-10-21 | 0.0 yrs | 35 | |
| US4084249A | Electronic counting system with keyboard input | Dr Johannes Heidenhain GmbH | Expired / Lapsed | 1976-11-26 | 1978-04-11 | 1996-11-26 | 0.0 yrs | 10 | |
| US3638186A | Arrangement for error determination | Dr Johannes Heidenhain GmbH | Expired / Lapsed | 1969-09-26 | 1972-01-25 | 1989-09-26 | 0.0 yrs | 11 |