US2820499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Floating, swivelling anchor nut
Assignee: McDonnell Aircraft Corp
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Filing: 1954-12-17
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Granted: 1958-01-21
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Expires: 1974-12-17
Abstract
No abstract record available.
Inventors
- 👤 Carl G Schaaf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:23
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B39/34; F16B37/00; F16B37/04; F16B37/044; F16B5/00; F16B5/02; F16B5/025; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/947; Y10S411/955; Y10S411/965
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB129513A
Cited
US1412502A
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US1399942A
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US2144553A
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US2243923A
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US2249923A
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US2339130A
Cited
US2429833A
Cited
US2502365A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |