Patent Explorer
Browse, filter, and analyze 127 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US4506253A | Supervisory and control circuit for alarm system | SPX Technologies Inc | Expired / Lapsed | 1983-01-03 | 1985-03-19 | 2003-01-03 | 0.0 yrs | 17 | |
| US4147002A | Light valve system and greenhouse utilizing the same | SPX Technologies Inc | Expired / Lapsed | 1977-02-14 | 1979-04-03 | 1997-02-14 | 0.0 yrs | 21 | |
| US4092010A | Variable fluid passage | SPX Technologies Inc | Expired / Lapsed | 1976-10-12 | 1978-05-30 | 1996-10-12 | 0.0 yrs | 27 | |
| US4020989A | Light transmitting building panel | SPX Technologies Inc | Expired / Lapsed | 1975-10-20 | 1977-05-03 | 1995-10-20 | 0.0 yrs | 8 | |
| US4012727A | Alarm control system | SPX Technologies Inc | Expired / Lapsed | 1975-05-21 | 1977-03-15 | 1995-05-21 | 0.0 yrs | 15 | |
| US3814839A | Remote digital switching technique for use on communications circuits | SPX Technologies Inc | Expired / Lapsed | 1972-05-08 | 1974-06-04 | 1992-05-08 | 0.0 yrs | 21 | |
| US3808366A | Binary data transmission system | SPX Technologies Inc | Expired / Lapsed | 1972-12-11 | 1974-04-30 | 1992-12-11 | 0.0 yrs | 18 | |
| US3763380A | Method and apparatus for measuring rates of random pulses | SPX Technologies Inc | Expired / Lapsed | 1971-05-05 | 1973-10-02 | 1991-05-05 | 0.0 yrs | 16 | |
| US3751127A | Modular instrument housing | SPX Technologies Inc | Expired / Lapsed | 1970-09-10 | 1973-08-07 | 1990-09-10 | 0.0 yrs | 20 | |
| US3639753A | System for governing the speed of railway vehicles | SPX Technologies Inc | Expired / Lapsed | 1969-09-15 | 1972-02-01 | 1989-09-15 | 0.0 yrs | 6 | |
| US3620248A | Backpressure device | SPX Technologies Inc | Expired / Lapsed | 1970-07-20 | 1971-11-16 | 1990-07-20 | 0.0 yrs | 7 | |
| US3588824A | Spare channel system for sectionalizing a communication line circuit | SPX Technologies Inc | Expired / Lapsed | 1969-09-04 | 1971-06-28 | 1989-09-04 | 0.0 yrs | 0 | |
| US3575604A | Motion control on doors of rapid transit cars | SPX Technologies Inc | Expired / Lapsed | 1969-09-17 | 1971-04-20 | 1989-09-17 | 0.0 yrs | 7 | |
| US3538325A | Performance level control of vehicles from a central office | SPX Technologies Inc | Expired / Lapsed | 1968-05-16 | 1970-11-03 | 1988-05-16 | 0.0 yrs | 0 | |
| US3465276A | Negative feedback circuit employing combination amplifier and lead-lag compensation network | SPX Technologies Inc | Expired / Lapsed | 1967-09-06 | 1969-09-02 | 1987-09-06 | 0.0 yrs | 0 | |
| US3414878A | Traffic signal lamp control circuit | SPX Technologies Inc | Expired / Lapsed | 1965-12-17 | 1968-12-03 | 1985-12-17 | 0.0 yrs | 0 | |
| US3403382A | Code communication system with control of remote units | SPX Technologies Inc | Expired / Lapsed | 1965-06-08 | 1968-09-24 | 1985-06-08 | 0.0 yrs | 0 | |
| US3377616A | Vehicle identification system | SPX Technologies Inc | Expired / Lapsed | 1964-04-27 | 1968-04-09 | 1984-04-27 | 0.0 yrs | 0 | |
| US3363096A | Control system for vehicles | SPX Technologies Inc | Expired / Lapsed | 1965-10-23 | 1968-01-09 | 1985-10-23 | 0.0 yrs | 1 | |
| US3360776A | Code communication system | SPX Technologies Inc | Expired / Lapsed | 1963-04-12 | 1967-12-26 | 1983-04-12 | 0.0 yrs | 2 |
Showing 1 to 20 of 127 patents
Page 1 of 7
Next →