Patent US6231602B1 successfully refreshed from Google Patents.
Patent US3065404A successfully refreshed from Google Patents.
US3065404A
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US
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Bore hole logging apparatus
Assignee: Sunoco Inc
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Filing: 1957-09-10
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Granted: 1962-11-20
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Expires: 1977-09-10
Abstract
No abstract record available.
Inventors
- 👤 Fred M Mayes
- 👤 Jones Jack Weir
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:34
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/20; E; E21; E21B; E21B7/00; E21B7/18; G01V3/34
Claims Analysis
Total Claims: 0
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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) | 1965-11-19 | 1966-05-21 | 1966-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-19 | 1970-05-21 | 1970-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-19 | 1974-05-21 | 1974-11-20 | $7700.00 | Window Closed / Lapsed |