US2943281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Frequency sensitive circuit providing speed error signals
Assignee: Bendix Aviation Corp
•
Filing: 1953-12-31
•
Granted: 1960-06-28
•
Expires: 1973-12-31
Abstract
No abstract record available.
Inventors
- 👤 Erwin E Boyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:32
CPC Classifications
H; H02; H02P; H02P5/00; G; G01; G01P; G01P3/00; G01P3/42; G01P3/56; G01P3/60
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1772509A
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US1416061A
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US2247898A
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US2358898A
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US2413263A
Cited
US2541666A
Cited
US2605358A
Cited
US2510296A
Cited
US2682031A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |