US2447669A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Remote-control system
Assignee: Westinghouse Electric Corp
•
Filing: 1943-02-08
•
Granted: 1948-08-24
•
Expires: 1963-02-08
Abstract
No abstract record available.
Inventors
- 👤 Lynn G Riley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:58
CPC Classifications
B; B60; B60L; B60L15/00; B60L15/42; B60L2200/00; B60L2200/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1022935A
Cited
US1185842A
Cited
US1347890A
Cited
US1355533A
Cited
US1416033A
Cited
US1412528A
Cited
US1739330A
Cited
US2120751A
Cited
GB321781A
Cited
US1940887A
Cited
US2204023A
Cited
US2254285A
Cited
US2317175A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-08-24 | 1952-02-23 | 1952-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-08-24 | 1956-02-23 | 1956-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-08-24 | 1960-02-23 | 1960-08-24 | $7700.00 | Window Closed / Lapsed |