Patent Explorer
Browse, filter, and analyze 2 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2359489A | Sound recording and reproducing | B A PROCTOR Co Inc | Expired / Lapsed | 1942-03-26 | 1944-10-03 | 1962-03-26 | 0.0 yrs | 0 | |
| US2300239A | Signal recording and communication system | B A PROCTOR Co Inc | Expired / Lapsed | 1940-10-03 | 1942-10-27 | 1960-10-03 | 0.0 yrs | 0 |