US3372942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pipe couplings
Assignee: Hepworth Iron Co Ltd
•
Filing: 1965-05-13
•
Granted: 1968-03-12
•
Expires: 1985-05-13
Abstract
No abstract record available.
Inventors
- 👤 Carter Raymond Charles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:28
CPC Classifications
F; F16; F16L; F16L17/00; F16L17/02; F16L47/00; F16L47/06; F16L47/08; F16L47/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US865497A
Cited
US1830517A
Cited
US2432592A
Cited
US2986411A
Cited
DE1118551B
Cited
FR1363048A
Cited
GB980901A
Cited
US3272538A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |