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US3515027A
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US
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Torsion cam fastener
Assignee: Individual
•
Filing: 1968-07-15
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Granted: 1970-06-02
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Expires: 1988-07-15
Abstract
No abstract record available.
Inventors
- 👤 Ralph Textrom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:07
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B21/00; F16B21/10; F16B21/20; F16B37/00; F16B37/12; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/929; Y10T; Y10T403/00; Y10T403/57; Y10T403/60; Y10T403/70; Y10T403/7047
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-01 | 1973-12-01 | 1974-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-01 | 1977-12-01 | 1978-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-01 | 1981-12-01 | 1982-06-02 | $7700.00 | Window Closed / Lapsed |