US2492766A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supervisory control system
Assignee: General Electric Co
•
Filing: 1946-02-27
•
Granted: 1949-12-27
•
Expires: 1966-02-27
Abstract
No abstract record available.
Inventors
- 👤 James T Purcell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:45
CPC Classifications
H; H02; H02J; H02J13/00; H02J13/18; H02J13/333
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1830974A
Cited
US1882010A
Cited
US2152384A
Cited
US2227623A
Cited
US2197130A
Cited
US1980190A
Cited
US2229249A
Cited
US2164379A
Cited
US2276646A
Cited
US2344231A
Cited
US2409696A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-12-26 | 1953-06-27 | 1953-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-12-26 | 1957-06-27 | 1957-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-12-26 | 1961-06-27 | 1961-12-27 | $7700.00 | Window Closed / Lapsed |