Patent US2883220A successfully refreshed from Google Patents.
US3115804A
Expired / Lapsed
US
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Snap bolt having resiliently flexible shank portion
Assignee: Wisconsin Alumni Research Foundation
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Filing: 1959-11-16
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Granted: 1963-12-31
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Expires: 1979-11-16
Abstract
No abstract record available.
Inventors
- 👤 Johnson Arthur Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:01
CPC Classifications
F; F16; F16B; F16B21/00; F16B21/06; F16B21/08; F16B21/086; Y; Y10; Y10S; Y10S411/00; Y10S411/919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US771336A
Cited
US1374713A
Cited
US2077355A
Cited
US2111267A
Cited
GB628316A
Cited
US2594027A
Cited
CH312604A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-12-30 | 1967-07-01 | 1967-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-30 | 1971-07-01 | 1971-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-30 | 1975-07-01 | 1975-12-31 | $7700.00 | Window Closed / Lapsed |