US2819877A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety joint and jarring tool
Assignee: TRIPOD OIL TOOL CO
•
Filing: 1954-05-20
•
Granted: 1958-01-14
•
Expires: 1974-05-20
Abstract
No abstract record available.
Inventors
- 👤 Koppl Ernest
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:11
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/02; E21B17/04; E21B17/06; E21B31/00; E21B31/107
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2059540A
Cited
US1885043A
Cited
US2026931A
Cited
US2096135A
Cited
US2158406A
Cited
US2474459A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-13 | 1961-07-15 | 1962-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-13 | 1965-07-15 | 1966-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-13 | 1969-07-15 | 1970-01-14 | $7700.00 | Window Closed / Lapsed |