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Patent US2892151A successfully refreshed from Google Patents.
US2892151A
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Apparatus for locating anomalies in a well bore
Assignee: Houston Oil Field Material Co Inc
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Filing: 1953-08-10
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Granted: 1959-06-23
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Expires: 1973-08-10
Abstract
No abstract record available.
Inventors
- 👤 Bender John Carlos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:08
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/09
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1996906A
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US2048591A
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US2407536A
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US2393717A
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US2480265A
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US2602833A
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US2671275A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-06-22 | 1962-12-22 | 1963-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-22 | 1966-12-22 | 1967-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-22 | 1970-12-22 | 1971-06-23 | $7700.00 | Window Closed / Lapsed |