Patent US2648813A successfully refreshed from Google Patents.
US2648813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulating system
Assignee: Westinghouse Electric Corp
•
Filing: 1951-03-14
•
Granted: 1953-08-11
•
Expires: 1971-03-14
Abstract
No abstract record available.
Inventors
- 👤 Schuyler L Bradley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:43
CPC Classifications
H; H02; H02P; H02P9/00; H02P9/14; H02P9/32
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2138732A
Cited
US2464551A
Cited
US2504675A
Cited
US2367625A
Cited
US2482482A
Cited
US2443665A
Cited
US2509865A
Cited
US2447655A
Cited
US2475575A
Cited
US2541820A
Cited
US2477991A
Cited
US2549250A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-10 | 1957-02-09 | 1957-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-10 | 1961-02-09 | 1961-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-10 | 1965-02-09 | 1965-08-11 | $7700.00 | Window Closed / Lapsed |