US2749841A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic acting jet gun for perforating well casings
Assignee: Individual
•
Filing: 1950-08-31
•
Granted: 1956-06-12
•
Expires: 1970-08-31
Abstract
No abstract record available.
Inventors
- 👤 Edward N Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:00
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/11; E21B43/116; E21B43/117
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1288107A
Cited
US1641483A
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US2210125A
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US2208780A
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US2307729A
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US2399211A
Cited
US2373006A
Cited
US2667836A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |