US3477748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Swivel joint for wells being pumped
Assignee: WILLIAM B TINSLEY
•
Filing: 1968-12-09
•
Granted: 1969-11-11
•
Expires: 1988-12-09
Abstract
No abstract record available.
Inventors
- 👤 William B Tinsley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:38
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/08; F; F16; F16L; F16L27/00; F16L27/02; F16L27/04; F16L27/053; F16L27/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1373515A
Cited
US1532195A
Cited
US1917742A
Cited
US2041316A
Cited
US3188115A
Cited
US3142344A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |