US3368618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conduit coupling with multiple fluid lines
Assignee: Hydril LLC
•
Filing: 1963-10-03
•
Granted: 1968-02-13
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Expires: 1983-10-03
Abstract
No abstract record available.
Inventors
- 👤 Granville S Knox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:20
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/01; E21B33/00; E21B33/02; E21B33/03; E21B33/035; E21B33/0355
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3145775A
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US3032106A
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US3285337A
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US3291210A
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US3090437A
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US3189098A
Cited
US3163224A
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US3280908A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-02-12 | 1971-08-14 | 1972-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-12 | 1975-08-14 | 1976-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-12 | 1979-08-14 | 1980-02-13 | $7700.00 | Window Closed / Lapsed |