Patent US3489437A successfully refreshed from Google Patents.
US3489437A
Expired / Lapsed
US
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Joint connection for pipes
Assignee: Vallourec SA
•
Filing: 1966-05-23
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Granted: 1970-01-13
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Expires: 1986-05-23
Abstract
No abstract record available.
Inventors
- 👤 Jean Louis Albert Duret
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 08:13
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/042; F; F16; F16L; F16L15/00; F16L15/001; F16L15/003; F16L15/004; F16L15/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1774841A
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GB392827A
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US2258066A
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US2261566A
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US2338307A
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US2772899A
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US3107421A
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US2793059A
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US3041088A
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FR1300262A
Cited
US3266821A
Cited
US3295870A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-01-12 | 1973-07-14 | 1974-01-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-12 | 1977-07-14 | 1978-01-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-12 | 1981-07-14 | 1982-01-13 | $7700.00 | Window Closed / Lapsed |