Patent US1117399A successfully refreshed from Google Patents.
Patent US2731622A successfully refreshed from Google Patents.
US2731622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lock-out system
Assignee: Motorola Solutions Inc
•
Filing: 1952-12-26
•
Granted: 1956-01-17
•
Expires: 1972-12-26
Abstract
No abstract record available.
Inventors
- 👤 John A Doremus
- 👤 Stenerson Charles Keith
- 👤 Herbert C Waterman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:43
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/38; H04B1/40; H04B1/54
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-01-16 | 1959-07-18 | 1960-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-01-16 | 1963-07-18 | 1964-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-01-16 | 1967-07-18 | 1968-01-17 | $7700.00 | Window Closed / Lapsed |