Patent US3491646A successfully refreshed from Google Patents.
US3491646A
Expired / Lapsed
US
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Fastening means for a rotational fastener and method
Assignee: Individual
•
Filing: 1967-05-22
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Granted: 1970-01-27
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Expires: 1987-05-22
Abstract
No abstract record available.
Inventors
- 👤 George A Tinnerman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:09
CPC Classifications
B; B21; B21K; B21K1/00; B21K1/64; F; F16; F16B; F16B21/00; F16B21/02; F16B37/00; F16B37/002; Y; Y10; Y10S; Y10S411/00; Y10S411/03
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US561913A
Cited
US2723584A
Cited
US2832972A
Cited
US3160189A
Cited
US3283639A
Cited
US3345899A
Cited
US3368444A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-26 | 1973-07-28 | 1974-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-26 | 1977-07-28 | 1978-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-26 | 1981-07-28 | 1982-01-27 | $7700.00 | Window Closed / Lapsed |