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US2642142A
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Hydraulic completion of wells
Assignee: Stanolind Oil and Gas Co
•
Filing: 1949-04-20
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Granted: 1953-06-16
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Expires: 1969-04-20
Abstract
No abstract record available.
Inventors
- 👤 Joseph B Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:39
CPC Classifications
E; E21; E21B; E21B43/00; E21B43/11; E21B43/114; E21B43/25; E21B43/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1393311A
Cited
US2215913A
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US2315496A
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US2330144A
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US2261292A
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US2354570A
Cited
US2379516A
Cited
US2418343A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |