Patent Explorer
Browse, filter, and analyze 14 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US4106011A | Keyboard circuit | Tektronix Inc | Expired / Lapsed | 1975-10-24 | 1978-08-08 | 1995-10-24 | 0.0 yrs | 5 | |
| US3886331A | Electronic scanning spectrophotometer system | Tektronix Inc | Expired / Lapsed | 1973-09-14 | 1975-05-27 | 1993-09-14 | 0.0 yrs | 23 | |
| US3843873A | Counter having selective direction and variable rate control | Tektronix Inc | Expired / Lapsed | 1972-09-19 | 1974-10-22 | 1992-09-19 | 0.0 yrs | 18 | |
| US3739347A | Cursor for use in performing graphic input in a display | Tektronix Inc | Expired / Lapsed | 1970-03-20 | 1973-06-12 | 1990-03-20 | 0.0 yrs | 19 | |
| US3637997A | Graphic display system | Tektronix Inc | Expired / Lapsed | 1968-12-06 | 1972-01-25 | 1988-12-06 | 0.0 yrs | 45 | |
| US3588672A | Current regulator controlled by voltage across semiconductor junction device | Tektronix Inc | Expired / Lapsed | 1968-02-08 | 1971-06-28 | 1988-02-08 | 0.0 yrs | 0 | |
| US3587052A | Transistor matrix | Tektronix Inc | Expired / Lapsed | 1968-10-28 | 1971-06-22 | 1988-10-28 | 0.0 yrs | 15 | |
| US3482163A | Magnetic signal measuring device including degaussing means | Tektronix Inc | Expired / Lapsed | 1967-05-24 | 1969-12-02 | 1987-05-24 | 0.0 yrs | 0 | |
| US3475682A | Shielded current measuring device | Tektronix Inc | Expired / Lapsed | 1967-07-17 | 1969-10-28 | 1987-07-17 | 0.0 yrs | 0 | |
| US3434049A | Time domain reflectometry system having a current source for locating discontinuities in a transmission line | Tektronix Inc | Expired / Lapsed | 1965-12-06 | 1969-03-18 | 1985-12-06 | 0.0 yrs | 0 | |
| US3426311A | Transition device | Tektronix Inc | Expired / Lapsed | 1966-06-16 | 1969-02-04 | 1986-06-16 | 0.0 yrs | 2 | |
| US3229212A | Direct sampling apparatus | Tektronix Inc | Expired / Lapsed | 1963-02-18 | 1966-01-11 | 1983-02-18 | 0.0 yrs | 1 | |
| US3229106A | Method of modulating light with intrinsic semiconductor device and electrical signal modulator employing such device | Tektronix Inc | Expired / Lapsed | 1961-10-16 | 1966-01-11 | 1981-10-16 | 0.0 yrs | 2 | |
| US3159780A | Semiconductor bridge rectifier | Tektronix Inc | Expired / Lapsed | 1961-06-19 | 1964-12-01 | 1981-06-19 | 0.0 yrs | 2 |