US2881379A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Velocity servosystem with signal quadrature component suppression
Assignee: Individual
•
Filing: 1955-07-26
•
Granted: 1959-04-07
•
Expires: 1975-07-26
Abstract
No abstract record available.
Inventors
- 👤 Jr Benjamin F Logan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:33
CPC Classifications
H; H02; H02P; H02P27/00; H02P27/02; H02P27/026
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2115086A
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US2554905A
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US2655597A
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US2531600A
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US2724969A
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US2698914A
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US2729772A
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US2769126A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-04-06 | 1962-10-06 | 1963-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-06 | 1966-10-06 | 1967-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-06 | 1970-10-06 | 1971-04-07 | $7700.00 | Window Closed / Lapsed |