Patent US3307860A successfully refreshed from Google Patents.
US3307860A
Expired / Lapsed
US
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Joint for liner-carrying well pipe
Assignee: Mobil Oil AS
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Filing: 1965-01-15
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Granted: 1967-03-07
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Expires: 1985-01-15
Abstract
No abstract record available.
Inventors
- 👤 Floyd E Blount
- 👤 Alvin V Metler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:34
CPC Classifications
F; F16; F16L; F16L15/00; F16L15/001; F16L15/003; E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/042; F16L58/00; F16L58/18; F16L58/182
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA649610A
Cited
US1590357A
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US2132574A
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US2201862A
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FR883048A
Cited
US2532632A
Cited
US2919936A
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US2938562A
Cited
US3047316A
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US3100656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |