Patent US2973471A successfully refreshed from Google Patents.
US2973471A
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Analysis techniques based on nuclear magnetic resonance
Assignee: Texaco Development Corp
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Filing: 1953-05-08
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Granted: 1961-02-28
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Expires: 1973-05-08
Abstract
No abstract record available.
Inventors
- 👤 Fontaine C Armistead
- 👤 Arthur L Tirico
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:39
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/32; E; E21; E21B; E21B10/00; E21B10/02; E21B25/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2337132A
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US2504731A
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US2561489A
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US2580670A
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US2561490A
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US2721970A
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US2820944A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |