US2800829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cruciform recessed screw
Assignee: WESLOC SCREW Inc
•
Filing: 1954-08-30
•
Granted: 1957-07-30
•
Expires: 1974-08-30
Abstract
No abstract record available.
Inventors
- 👤 Maxwell A West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:02
CPC Classifications
F; F16; F16B; F16B23/00; F16B23/0007; F16B23/0023; B; B25; B25B; B25B15/00; B25B15/001; B25B15/004; B25B15/005; Y; Y10; Y10S; Y10S411/00; Y10S411/919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US685197A
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US1797390A
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US2058197A
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US2285460A
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US2369852A
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US2268515A
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US2389129A
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US2538350A
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US2601453A
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US2677985A
Cited
US2592462A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-29 | 1961-01-28 | 1961-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-29 | 1965-01-28 | 1965-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-29 | 1969-01-28 | 1969-07-30 | $7700.00 | Window Closed / Lapsed |