Patent Explorer
Browse, filter, and analyze 7 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US4320388A | Two wire optical data communication system | Northrop Grumman Corp | Expired / Lapsed | 1980-07-15 | 1982-03-16 | 2000-07-15 | 0.0 yrs | 8 | |
| US3088033A | Automatic multiple grid scanning tracker | Northrop Grumman Corp | Expired / Lapsed | 1953-08-31 | 1963-04-30 | 1973-08-31 | 0.0 yrs | 2 | |
| US2841328A | Digital differential analyzer | Northrop Grumman Corp | Expired / Lapsed | 1950-03-06 | 1958-07-01 | 1970-03-06 | 0.0 yrs | 0 | |
| US2820688A | Digital differential analyzer magnetic drum | Northrop Grumman Corp | Expired / Lapsed | 1952-09-10 | 1958-01-21 | 1972-09-10 | 0.0 yrs | 0 | |
| US2744420A | Cable slack compensator | Northrop Grumman Corp | Expired / Lapsed | 1952-07-11 | 1956-05-08 | 1972-07-11 | 0.0 yrs | 0 | |
| US2618760A | Glow tube anode construction | Northrop Grumman Corp | Expired / Lapsed | 1950-11-06 | 1952-11-18 | 1970-11-06 | 0.0 yrs | 0 | |
| US2412647A | Aircraft | Northrop Grumman Corp | Expired / Lapsed | 1944-08-08 | 1946-12-17 | 1964-08-08 | 0.0 yrs | 0 |