US2520115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Servomotor for aircraft controls
Assignee: Jack & Heintz Prec Ind Inc
•
Filing: 1946-03-30
•
Granted: 1950-08-29
•
Expires: 1966-03-30
Abstract
No abstract record available.
Inventors
- 👤 Lysle D Cahill
- 👤 Walter T Buhl
- 👤 Alfred S Horwitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:07
CPC Classifications
F; F15; F15B; F15B9/00; F15B9/02; F15B9/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2179179A
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US2342184A
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US2390119A
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US2358845A
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US2453650A
Cited
US2372710A
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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) | 1953-08-28 | 1954-02-27 | 1954-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-28 | 1958-02-27 | 1958-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-28 | 1962-02-27 | 1962-08-29 | $7700.00 | Window Closed / Lapsed |