US2886753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Digital positioning servo
Assignee: North American Aviation Corp
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Filing: 1957-05-21
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Granted: 1959-05-12
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Expires: 1977-05-21
Abstract
No abstract record available.
Inventors
- 👤 Wilton R Abbott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:48
CPC Classifications
G; G05; G05B; G05B19/00; G05B19/02; G05B19/18; G05B19/19; G05B19/21; G05B19/23; G05B19/231; H; H03; H03M; H03M1/00; H03M1/12; H03M1/48; H03M1/485; G05B2219/00; G05B2219/30; G05B2219/37; G05B2219/37154; G05B2219/41; G05B2219/41456; G05B2219/42; G05B2219/42213; G05B2219/43; G05B2219/43194
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2537427A
Cited
FR1110544A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-11 | 1962-11-10 | 1963-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-11 | 1966-11-10 | 1967-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-11 | 1970-11-10 | 1971-05-12 | $7700.00 | Window Closed / Lapsed |