US2582682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drilling motion take-off
Assignee: Standard Oil Development Co
•
Filing: 1948-06-26
•
Granted: 1952-01-15
•
Expires: 1968-06-26
Abstract
No abstract record available.
Inventors
- 👤 Robert R Crookston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:01
CPC Classifications
E; E21; E21B; E21B45/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US379743A
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US1044384A
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US1350894A
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US1446281A
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US1534336A
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US2016581A
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US2163402A
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US2326219A
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US2327506A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-01-14 | 1955-07-16 | 1956-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-14 | 1959-07-16 | 1960-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-14 | 1963-07-16 | 1964-01-15 | $7700.00 | Window Closed / Lapsed |