US2766426A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Total magnetic field well logging method and apparatus
Assignee: ExxonMobil Oil Corp
•
Filing: 1950-08-03
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Granted: 1956-10-09
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Expires: 1970-08-03
Abstract
No abstract record available.
Inventors
- 👤 Eugene S Wilhelm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:56
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/02; G01R33/04; G01R33/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2632884A
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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) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |