US2774026A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital servomotor
Assignee: Northrop Grumman Corp
•
Filing: 1953-07-31
•
Granted: 1956-12-11
•
Expires: 1973-07-31
Abstract
No abstract record available.
Inventors
- 👤 George H Towner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 07:51
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/18; G05D3/183
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US843287A
Cited
US2402928A
Cited
US2461566A
Cited
US2596711A
Cited
US2630552A
Cited
US2537427A
Cited
US2706270A
Cited
US2643355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-11 | 1960-06-11 | 1960-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-11 | 1964-06-11 | 1964-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-11 | 1968-06-11 | 1968-12-11 | $7700.00 | Window Closed / Lapsed |