Patent Explorer
Browse, filter, and analyze 10 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3766459A | Electronic stepping drive for dc torque motor | Landis Tool Co | Expired / Lapsed | 1971-08-25 | 1973-10-16 | 1991-08-25 | 0.0 yrs | 6 | |
| US3673434A | Noise immune flip-flop circuit arrangement | Landis Tool Co | Expired / Lapsed | 1969-11-26 | 1972-06-27 | 1989-11-26 | 0.0 yrs | 20 | |
| US2922933A | Magnetic chuck | Landis Tool Co | Expired / Lapsed | 1955-05-31 | 1960-01-26 | 1975-05-31 | 0.0 yrs | 0 | |
| US2359017A | Relief valve | Landis Tool Co | Expired / Lapsed | 1942-03-04 | 1944-09-26 | 1962-03-04 | 0.0 yrs | 0 | |
| US2335356A | Grinding machine | Landis Tool Co | Expired / Lapsed | 1940-02-28 | 1943-11-30 | 1960-02-28 | 0.0 yrs | 0 | |
| US2286620A | Steady rest adjusting means | Landis Tool Co | Expired / Lapsed | 1939-05-18 | 1942-06-16 | 1959-05-18 | 0.0 yrs | 0 | |
| US2249343A | Reversing mechanism | Landis Tool Co | Expired / Lapsed | 1937-04-21 | 1941-07-15 | 1957-04-21 | 0.0 yrs | 0 | |
| US2083682A | Carriage mounting for grinding machines | Landis Tool Co | Expired / Lapsed | 1931-11-25 | 1937-06-15 | 1951-11-25 | 0.0 yrs | 0 | |
| US2019066A | Automatic sizing device | Landis Tool Co | Expired / Lapsed | 1932-04-05 | 1935-10-29 | 1952-04-05 | 0.0 yrs | 0 | |
| US1816750A | Crank grinding machine | Landis Tool Co | Expired / Lapsed | 1926-08-02 | 1931-07-28 | 1946-08-02 | 0.0 yrs | 0 |