US2486151A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor control system
Assignee: RAYTHEON AIR BEAM Inc
•
Filing: 1947-10-14
•
Granted: 1949-10-25
•
Expires: 1967-10-14
Abstract
No abstract record available.
Inventors
- 👤 Fritz A Gross
- 👤 Jr Robert R Darden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:56
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/121; G05D3/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1965416A
Cited
US1955322A
Cited
US2070462A
Cited
US2424568A
Cited
US2402210A
Cited
US2414936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-10-24 | 1953-04-25 | 1953-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-10-24 | 1957-04-25 | 1957-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-10-24 | 1961-04-25 | 1961-10-25 | $7700.00 | Window Closed / Lapsed |