Patent Explorer
Browse, filter, and analyze 3 patents across global jurisdictions.
| Patent Number | Title | Assignee | Status | Filing Date | Grant Date | Expires | Remaining | Claims | Actions |
|---|---|---|---|---|---|---|---|---|---|
| US2250828A | Alarm system control | HOWTON RADIO ALARM Co | Expired / Lapsed | 1938-02-21 | 1941-07-29 | 1958-02-21 | 0.0 yrs | 0 | |
| US2250834A | Radio alarm system | HOWTON RADIO ALARM Co | Expired / Lapsed | 1938-01-12 | 1941-07-29 | 1958-01-12 | 0.0 yrs | 0 | |
| US2249560A | Radio alarm system | HOWTON RADIO ALARM Co | Expired / Lapsed | 1938-02-21 | 1941-07-15 | 1958-02-21 | 0.0 yrs | 0 |