Patent US3052838A successfully refreshed from Google Patents.
US3052838A
Expired / Lapsed
US
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Bore hole logging apparatus
Assignee: Sunoco Inc
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Filing: 1957-09-23
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Granted: 1962-09-04
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Expires: 1977-09-23
Abstract
No abstract record available.
Inventors
- 👤 Bennett John
- 👤 Preston E Chaney
- 👤 Jones Jack Weir
- 👤 Fred M Mayes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:26
CPC Classifications
E; E21; E21B; E21B10/00; E21B10/08; E21B10/18; E21B47/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1898503A
Cited
US1984964A
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US2070912A
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US2382609A
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US2349366A
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US2653294A
Cited
US2879126A
Cited
GB710636A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-09-03 | 1966-03-05 | 1966-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-09-03 | 1970-03-05 | 1970-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-09-03 | 1974-03-05 | 1974-09-04 | $7700.00 | Window Closed / Lapsed |