Patent US2804180A successfully refreshed from Google Patents.
US2804180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cage nut
Assignee: Individual
•
Filing: 1955-02-16
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Granted: 1957-08-27
•
Expires: 1975-02-16
Abstract
No abstract record available.
Inventors
- 👤 Frederick G Richardson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:55
CPC Classifications
F; F16; F16B; F16B37/00; F16B37/04; F16B37/044; Y; Y10; Y10S; Y10S411/00; Y10S411/955; Y10S411/965; Y10S411/969; Y10T; Y10T29/00; Y10T29/49; Y10T29/49826; Y10T29/49908; Y10T29/49915; Y10T29/4992; Y10T29/49938
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US226450A
Cited
US1753791A
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US1872385A
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US2144350A
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US2084926A
Cited
US2201401A
Cited
US2249923A
Cited
US2278790A
Cited
US2413669A
Cited
US2678075A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |