US2581288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Resilient screw fastener
Assignee: Individual
•
Filing: 1946-05-13
•
Granted: 1952-01-01
•
Expires: 1966-05-13
Abstract
No abstract record available.
Inventors
- 👤 Jr John W Pletcher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:49
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/10; F16B21/16; F16B37/00; F16B37/02; Y; Y10; Y10S; Y10S411/00; Y10S411/918
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1261014A
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US1243859A
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US1472242A
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USRE22049E
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US2200702A
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US2342690A
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US2259425A
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US2454223A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-31 | 1955-07-02 | 1956-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-31 | 1959-07-02 | 1960-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-31 | 1963-07-02 | 1964-01-01 | $7700.00 | Window Closed / Lapsed |