US2965753A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Productivity well logging
Assignee: Texaco Inc
•
Filing: 1955-12-08
•
Granted: 1960-12-20
•
Expires: 1975-12-08
Abstract
No abstract record available.
Inventors
- 👤 Ralph C Reynolds
- 👤 Alexander S Mckay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:34
CPC Classifications
E; E21; E21B; E21B47/00; E21B47/10; E21B47/11; E21B47/111
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2735944A
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US2425868A
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US2273215A
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US2228623A
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US2316239A
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US2554718A
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US2599975A
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US2688872A
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US2709365A
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US2701960A
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US2714168A
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US2725486A
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US2700734A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |