Patent US2495409A successfully refreshed from Google Patents.
US2495409A
Expired / Lapsed
US
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Nut for lead screws
Assignee: Individual
•
Filing: 1945-01-19
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Granted: 1950-01-24
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Expires: 1965-01-19
Abstract
No abstract record available.
Inventors
- 👤 Francis G Costello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:46
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B39/284; F16B39/286; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10S411/936; Y10S411/937
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US874267A
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Cited
GB188267A
Cited
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US1885459A
Cited
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Cited
US2196637A
Cited
US2215560A
Cited
US2286895A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-01-23 | 1953-07-25 | 1954-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-23 | 1957-07-25 | 1958-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-23 | 1961-07-25 | 1962-01-24 | $7700.00 | Window Closed / Lapsed |