US3475722A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for acoustic bore hole logging using acoustic signals of controlled direction
Assignee: Marathon Oil Co
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Filing: 1968-11-07
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Granted: 1969-10-28
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Expires: 1988-11-07
Abstract
No abstract record available.
Inventors
- 👤 James E White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:06
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/44; G01V1/46; Y; Y10; Y10S; Y10S367/00; Y10S367/911
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3376950A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |