Patent Explorer
Browse, filter, and analyze 23 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US3512024A | Frameless permissible dynamoelectric machine | Westinghouse Air Brake Co | Expired / Lapsed | 1968-08-19 | 1970-05-12 | 1988-08-19 | 0.0 yrs | 0 | |
| US3335227A | Coordination of telephone and remote control transmission over a common communication channel | Westinghouse Air Brake Co | Expired / Lapsed | 1963-10-16 | 1967-08-08 | 1983-10-16 | 0.0 yrs | 2 | |
| US3268662A | Coordination arrangement for telephone and remote control communication over a common channel | Westinghouse Air Brake Co | Expired / Lapsed | 1962-05-24 | 1966-08-23 | 1982-05-24 | 0.0 yrs | 2 | |
| US3117303A | Random access switching system | Westinghouse Air Brake Co | Expired / Lapsed | 1959-03-13 | 1964-01-07 | 1979-03-13 | 0.0 yrs | 2 | |
| US2870408A | Precise automatic multirange indicating voltmeter and/or ratiometer | Westinghouse Air Brake Co | Expired / Lapsed | 1955-04-25 | 1959-01-20 | 1975-04-25 | 0.0 yrs | 0 | |
| US2690939A | Fluid pressure cylinder | Westinghouse Air Brake Co | Expired / Lapsed | 1950-12-20 | 1954-10-05 | 1970-12-20 | 0.0 yrs | 0 | |
| US2643370A | Electric circuit checking equipment | Westinghouse Air Brake Co | Expired / Lapsed | 1951-03-26 | 1953-06-23 | 1971-03-26 | 0.0 yrs | 0 | |
| US2622142A | Automatic reservation system of the code type | Westinghouse Air Brake Co | Expired / Lapsed | 1950-07-22 | 1952-12-16 | 1970-07-22 | 0.0 yrs | 0 | |
| US2580155A | Proximity detector employing microwaves | Westinghouse Air Brake Co | Expired / Lapsed | 1949-06-04 | 1951-12-25 | 1969-06-04 | 0.0 yrs | 0 | |
| US2574783A | Rectifier assembly | Westinghouse Air Brake Co | Expired / Lapsed | 1949-06-24 | 1951-11-13 | 1969-06-24 | 0.0 yrs | 0 | |
| US2574774A | Remote-control system | Westinghouse Air Brake Co | Expired / Lapsed | 1949-04-30 | 1951-11-13 | 1969-04-30 | 0.0 yrs | 0 | |
| US2473683A | Relay control system | Westinghouse Air Brake Co | Expired / Lapsed | 1945-06-23 | 1949-06-21 | 1965-06-23 | 0.0 yrs | 0 | |
| US2428452A | Ring type cylinder and piston | Westinghouse Air Brake Co | Expired / Lapsed | 1943-12-11 | 1947-10-07 | 1963-12-11 | 0.0 yrs | 0 | |
| US2337717A | Vehicle brake and propulsion control | Westinghouse Air Brake Co | Expired / Lapsed | 1941-11-29 | 1943-12-28 | 1961-11-29 | 0.0 yrs | 0 | |
| US2311851A | Check valve device | Westinghouse Air Brake Co | Expired / Lapsed | 1941-11-27 | 1943-02-23 | 1961-11-27 | 0.0 yrs | 0 | |
| US2277135A | Compressor apparatus | Westinghouse Air Brake Co | Expired / Lapsed | 1940-04-29 | 1942-03-24 | 1960-04-29 | 0.0 yrs | 0 | |
| US2218616A | Brake means | Westinghouse Air Brake Co | Expired / Lapsed | 1939-06-30 | 1940-10-22 | 1959-06-30 | 0.0 yrs | 0 | |
| US2204815A | Load brake apparatus | Westinghouse Air Brake Co | Expired / Lapsed | 1939-03-31 | 1940-06-18 | 1959-03-31 | 0.0 yrs | 0 | |
| US2088180A | Packing | Westinghouse Air Brake Co | Expired / Lapsed | 1934-11-03 | 1937-07-27 | 1954-11-03 | 0.0 yrs | 0 | |
| US1956691A | Quick action valve device | Westinghouse Air Brake Co | Expired / Lapsed | 1930-10-31 | 1934-05-01 | 1950-10-31 | 0.0 yrs | 0 |
Showing 1 to 20 of 23 patents
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