US2550122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control system
Assignee: Westinghouse Electric Corp
•
Filing: 1947-07-17
•
Granted: 1951-04-24
•
Expires: 1967-07-17
Abstract
No abstract record available.
Inventors
- 👤 William O Osbon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:49
CPC Classifications
H; H02; H02P; H02P7/00; H02P7/06; H02P7/18; H02P7/34; H02P7/347
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1832609A
Cited
US2121588A
Cited
US2175017A
Cited
US2287835A
Cited
US2354930A
Cited
US2356567A
Cited
US2387795A
Cited
US2441387A
Cited
US2409312A
Cited
US2444261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-04-23 | 1954-10-23 | 1955-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-04-23 | 1958-10-23 | 1959-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-04-23 | 1962-10-23 | 1963-04-24 | $7700.00 | Window Closed / Lapsed |