Patent Explorer
Browse, filter, and analyze 5 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| GB534300A | Improvements in or relating to electrical signalling systems | Ericsson Telephones Ltd | Expired / Lapsed | 1939-11-09 | — | 1959-11-09 | 0.0 yrs | 0 | |
| US3289180A | Magnetic core matrices | Ericsson Telephones Ltd | Expired / Lapsed | 1962-11-05 | 1966-11-29 | 1982-11-05 | 0.0 yrs | 2 | |
| US3161732A | Testing and control system for supervisory circuits in electronic telephone exchanges | Ericsson Telephones Ltd | Expired / Lapsed | 1962-03-08 | 1964-12-15 | 1982-03-08 | 0.0 yrs | 2 | |
| US3065304A | Delay line pulse stores | Ericsson Telephones Ltd | Expired / Lapsed | 1961-02-10 | 1962-11-20 | 1981-02-10 | 0.0 yrs | 0 | |
| US2997705A | Electrical code translators | Ericsson Telephones Ltd | Expired / Lapsed | 1958-07-11 | 1961-08-22 | 1978-07-11 | 0.0 yrs | 0 |