US2877681A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Screw having deformable temporary head disposed in a groove
Assignee: SET SCREW AND Manufacturing CO
•
Filing: 1954-04-16
•
Granted: 1959-03-17
•
Expires: 1974-04-16
Abstract
No abstract record available.
Inventors
- 👤 Calvin O Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:42
CPC Classifications
F; F16; F16B; F16B35/00; F16B35/005; F16B27/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US527569A
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GB125200A
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US1299691A
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DE408643C
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US1920792A
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US2132148A
Cited
US2168126A
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US2177452A
Cited
US2201087A
Cited
US2335367A
Cited
US2767950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |