NORTH ELECTRIC MANUFACTURING Co
NORTH ELECActive Patents
0
Total Holdings
6
Patent Holdings
Filter in Explorer →| Patent No. | Title | Status | Filing Date | Grant Date | Claims | Actions |
|---|---|---|---|---|---|---|
| US2679637A | Synchronous supervisory control system | Expired / Lapsed | 1950-06-06 | 1954-05-25 | 0 | Details |
| US2616959A | Supervisory control system safeguard | Expired / Lapsed | 1950-04-04 | 1952-11-04 | 0 | Details |
| US2444243A | Remote-control system | Expired / Lapsed | 1946-08-07 | 1948-06-29 | 0 | Details |
| US2396332A | Relay construction | Expired / Lapsed | 1940-07-29 | 1946-03-12 | 0 | Details |
| US2091301A | Supervisory control system | Expired / Lapsed | 1931-07-03 | 1937-08-31 | 0 | Details |
| US1929669A | Control system for automatic substations | Expired / Lapsed | 1922-07-24 | 1933-10-10 | 0 | Details |