US3450424A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self-locking coupling
Assignee: E B Wiggins Inc
•
Filing: 1964-12-24
•
Granted: 1969-06-17
•
Expires: 1984-12-24
Abstract
No abstract record available.
Inventors
- 👤 Jay V Calisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:07
CPC Classifications
F; F16; F16L; F16L37/00; F16L37/08; F16L37/084; F16L37/088; F16L37/0885; F16L37/12; F16L37/14; F16L37/142; F16L37/144; F16L37/28; F16L37/30; F16L37/32; F16L37/34; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917; Y10T137/87925; Y10T137/87941; Y10T137/87949
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1514130A
Cited
US1881980A
Cited
US2436208A
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US2850298A
Cited
US2854259A
Cited
US2893755A
Cited
US3039794A
Cited
US3097867A
Cited
FR1294438A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |