US3441296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hose coupling
Assignee: ELLSWORTH D WILKIN
•
Filing: 1967-07-03
•
Granted: 1969-04-29
•
Expires: 1987-07-03
Abstract
No abstract record available.
Inventors
- 👤 Ellsworth D Wilkin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:16
CPC Classifications
F; F16; F16L; F16L33/00; F16L33/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1233644A
Cited
US1665812A
Cited
US2326439A
Cited
US2273398A
Cited
US2414789A
Cited
FR1055473A
Cited
US3220753A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-04-28 | 1972-10-28 | 1973-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-04-28 | 1976-10-28 | 1977-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-04-28 | 1980-10-28 | 1981-04-29 | $7700.00 | Window Closed / Lapsed |