US2651027A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well logging
Assignee: Shell Development Co
•
Filing: 1949-10-01
•
Granted: 1953-09-01
•
Expires: 1969-10-01
Abstract
No abstract record available.
Inventors
- 👤 Charles B Vogel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:22
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/52
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
GB191004967A
Cited
US1500243A
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US2056301A
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US1685075A
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US1758993A
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US2191119A
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US2167536A
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US2233992A
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US2275736A
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US2350371A
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US2403990A
Cited
US2478908A
Cited
US2595241A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-08-31 | 1957-03-02 | 1957-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-31 | 1961-03-02 | 1961-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-31 | 1965-03-02 | 1965-09-01 | $7700.00 | Window Closed / Lapsed |