North Electric Co
North ElecActive Patents
0
Total Holdings
10
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US3380399A | Remote control and supervision system for a railroad train | Expired / Lapsed | 1965-06-30 | 1968-04-30 | 0 | Details |
| US3337847A | Communication system for connecting subscribers to a multip… | Expired / Lapsed | 1963-09-17 | 1967-08-22 | 2 | Details |
| US3238305A | Time division multiplex system including circuits for trans… | Expired / Lapsed | 1961-05-18 | 1966-03-01 | 1 | Details |
| US3237186A | Analog to digital converter | Expired / Lapsed | 1962-02-02 | 1966-02-22 | 2 | Details |
| US3160101A | Automatic selective control of pumping engines | Expired / Lapsed | 1962-02-15 | 1964-12-08 | 2 | Details |
| US3119981A | Supervisory control system | Expired / Lapsed | 1957-06-05 | 1964-01-28 | 2 | Details |
| US3110013A | Supervisory control and communications system | Expired / Lapsed | 1960-07-11 | 1963-11-05 | 2 | Details |
| US2944247A | Supervisory control system | Expired / Lapsed | 1955-03-23 | 1960-07-05 | 0 | Details |
| US2819841A | Analyzer for ticketing system | Expired / Lapsed | 1952-10-11 | 1958-01-14 | 0 | Details |
| US2782257A | Automatic telephone system | Expired / Lapsed | 1951-07-23 | 1957-02-19 | 0 | Details |