Patent US3634577A successfully refreshed from Google Patents.
US3634577A
Expired / Lapsed
US
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Method of making self-locking fasteners
Assignee: SPS Technologies LLC
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Filing: 1970-04-15
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Granted: 1972-01-11
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Expires: 1990-04-15
Abstract
Abstract METHOD OF MAKING A PLASTIC PATCH LOCKING ELEMENT ON A METAL FASTENER BY FUSING POWDERED PLASTIC ON A SURFACE OF THE FASTENER WHILE CONSTRAINING FREE FLOW OF THE FUSED PLASTIC TO AN AREA WITHIN WHICH SAID LOCKING ELEMENT IS TO BE FORMED.
Inventors
- 👤 Francis R Kull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:15
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/68; B29C70/74; B29C65/00; B29C65/72; F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B39/34; B29K; B29K2105/00; B29K2105/25; B29K2105/251; B29L; B29L2001/00; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/947
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-10 | 1975-07-12 | 1976-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-10 | 1979-07-12 | 1980-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-10 | 1983-07-12 | 1984-01-11 | $7700.00 | Window Closed / Lapsed |