US2436563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well logging
Assignee: Standard Oil Development Co
•
Filing: 1941-12-27
•
Granted: 1948-02-24
•
Expires: 1961-12-27
Abstract
No abstract record available.
Inventors
- 👤 Frosch Alex
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:35
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2018080A
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US2271951A
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US2132807A
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US2225668A
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US2317259A
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US2255754A
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US2364957A
Cited
US2295738A
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US2288876A
Cited
US2288278A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-02-23 | 1951-08-25 | 1952-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-02-23 | 1955-08-25 | 1956-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-02-23 | 1959-08-25 | 1960-02-24 | $7700.00 | Window Closed / Lapsed |