US2867453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swivel coupling with inserted section type swivel unit
Assignee: Vetco Gray LLC
•
Filing: 1953-11-05
•
Granted: 1959-01-06
•
Expires: 1973-11-05
Abstract
No abstract record available.
Inventors
- 👤 John D Watts
- 👤 Erwin F Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:27
CPC Classifications
E; E21; E21B; E21B21/00; E21B21/02; F; F16; F16L; F16L27/00; F16L27/08; F16L27/0804; F16L27/0808; F16L27/0812; F16L27/0816
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US803687A
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US1007326A
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US2496569A
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US2485940A
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US2470960A
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US2610827A
Cited
US2695794A
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US2676788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |