Patent US2809686A successfully refreshed from Google Patents.
US2809686A
Expired / Lapsed
US
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Barrel nut with spring retainer member
Assignee: Boeing Co
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Filing: 1952-08-16
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Granted: 1957-10-15
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Expires: 1972-08-16
Abstract
No abstract record available.
Inventors
- 👤 Ray A Shepherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:53
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/04; F16B37/045; F16B37/047; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/97
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1671757A
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US2144553A
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US2188135A
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US2326285A
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US2304481A
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US2336319A
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US2596056A
Cited
US2496094A
Cited
US2703663A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-10-14 | 1961-04-15 | 1961-10-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-14 | 1965-04-15 | 1965-10-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-14 | 1969-04-15 | 1969-10-15 | $7700.00 | Window Closed / Lapsed |