US3381983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Connectible and disconnectible tool joints
Assignee: Ventura Tool Co
•
Filing: 1965-08-16
•
Granted: 1968-05-07
•
Expires: 1985-08-16
Abstract
No abstract record available.
Inventors
- 👤 James W E Hanes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:42
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/046; F; F16; F16L; F16L37/00; F16L37/08; F16L37/084; F16L37/088; F16L37/0885
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2417195A
Cited
US2877732A
Cited
US2997317A
Cited
US3104905A
Cited
US3207535A
Cited
US3278205A
Cited
US3287032A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |