US2662998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric motor control for shaft positioning systems
Assignee: Collins Radio Co
•
Filing: 1951-01-05
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Granted: 1953-12-15
•
Expires: 1971-01-05
Abstract
No abstract record available.
Inventors
- 👤 Robert F Witters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:01
CPC Classifications
G; G05; G05D; G05D3/00; G05D3/12; G05D3/125; G05D3/127
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2210426A
Cited
US2553069A
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US2420026A
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US2442739A
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US2455901A
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US2475217A
Cited
US2493844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-12-14 | 1957-06-15 | 1957-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-12-14 | 1961-06-15 | 1961-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-12-14 | 1965-06-15 | 1965-12-15 | $7700.00 | Window Closed / Lapsed |