US2766412A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric servomotor system
Assignee: EMI Ltd
•
Filing: 1950-10-16
•
Granted: 1956-10-09
•
Expires: 1970-10-16
Abstract
No abstract record available.
Inventors
- 👤 Stephenson Geoffrey Huson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:15
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/14; G05D3/1445; G05D3/1427
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2367746A
Cited
US2455979A
Cited
US2401421A
Cited
US2544922A
Cited
US2701328A
Cited
US2692358A
Cited
US2674708A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |