US2907589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealed joint for tubing
Assignee: Hydril LLC
•
Filing: 1956-11-05
•
Granted: 1959-10-06
•
Expires: 1976-11-05
Abstract
No abstract record available.
Inventors
- 👤 Granville S Knox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:54
CPC Classifications
F; F16; F16L; F16L15/00; F16L15/006; F16L15/009; E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/042; F16L15/008
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2211179A
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US2508306A
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US2450453A
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US2553836A
Cited
US2775471A
Cited
US2590565A
Cited
US2726104A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-05 | 1963-04-06 | 1963-10-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-05 | 1967-04-06 | 1967-10-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-05 | 1971-04-06 | 1971-10-06 | $7700.00 | Window Closed / Lapsed |