US3618447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Deterioration fasteners
Assignee: Phillips Petroleum Co
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Filing: 1969-09-15
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Granted: 1971-11-09
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Expires: 1989-09-15
Abstract
Abstract FASTENING APPARATUS ARE DISCLOSED WHICH EMBODY ONE OR MORE LEGS HAVING UPWARDLY AND OUTWARDLY PROJECTING BARBS WHICH PROVIDE RESISTANCE TO WITHDRAWAL AFTER INSERTION IN THE MATERIAL TO BE FASTENED. BY FABRICATING THE FASTENERS FROM POLYMERIC MATERIALS WHICH UNDERGO DECOMPOSITION IN ULTRAVIOLET LIGHT, THE FASTENERS HAVE A PREDICTABLE LIFE.
Inventors
- 👤 Robert R Goins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:57
CPC Classifications
F; F16; F16B; F16B15/00; F16B15/06; F16B15/0015; Y; Y10; Y10S; Y10S411/00; Y10S411/904; Y10S411/908; Y10S411/92; Y10S411/921
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) | 1974-11-08 | 1975-05-10 | 1975-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-08 | 1979-05-10 | 1979-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-08 | 1983-05-10 | 1983-11-09 | $7700.00 | Window Closed / Lapsed |