Patent US3437541A successfully refreshed from Google Patents.
US3437541A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pre-formed plastic locking element for fasteners
Assignee: SPS Technologies LLC
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Filing: 1967-03-06
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Granted: 1969-04-08
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Expires: 1987-03-06
Abstract
No abstract record available.
Inventors
- 👤 Charles W Cooper
- 👤 Michael M Epstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:43
CPC Classifications
F; F16; F16B; F16B39/00; F16B39/22; F16B39/28; F16B39/34; B; B29; B29C; B29C65/00; B29C65/48; B29C65/4805; B29C65/481; B29C65/4815; B29C65/486; Y; Y10; Y10S; Y10S411/00; Y10S411/924; Y10S411/947
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) | 1972-04-07 | 1972-10-07 | 1973-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-07 | 1976-10-07 | 1977-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-07 | 1980-10-07 | 1981-04-08 | $7700.00 | Window Closed / Lapsed |