US2911912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Roll control means
Assignee: RTX Corp
•
Filing: 1957-06-27
•
Granted: 1959-11-10
•
Expires: 1977-06-27
Abstract
No abstract record available.
Inventors
- 👤 Jr Arthur E Wetherbee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:10
CPC Classifications
B; B64; B64G; B64G1/00; B64G1/22; B64G1/24; B64G1/28; G; G05; G05D; G05D1/00; G05D1/08; G05D1/0808
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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FR625104A
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US2077143A
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US2153180A
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US2500537A
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US2745095A
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US2694898A
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US2623465A
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US2726510A
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US2774305A
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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) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |