Patent US3468563A successfully refreshed from Google Patents.
US3468563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separable joint for pipes
Assignee: Vallourec SA
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Filing: 1967-08-07
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Granted: 1969-09-23
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Expires: 1987-08-07
Abstract
No abstract record available.
Inventors
- 👤 Jean Louis Albert Duret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:00
CPC Classifications
F; F16; F16L; F16L15/00; F16L15/001; E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/042
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1932427A
Cited
US1953701A
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US2211173A
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US2587544A
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US2772102A
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US3100656A
Cited
US3081644A
Cited
US3180202A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-22 | 1973-03-24 | 1973-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-22 | 1977-03-24 | 1977-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-22 | 1981-03-24 | 1981-09-23 | $7700.00 | Window Closed / Lapsed |