US3538425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical well-logging probe having redox-reversible and redox-nonreversible electrodes
Assignee: Individual
•
Filing: 1968-01-18
•
Granted: 1970-11-03
•
Expires: 1988-01-18
Abstract
No abstract record available.
Inventors
- 👤 Italo Veneziani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 16:07
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/26; G01V3/265
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1865847A
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US2376168A
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US2390409A
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US2653294A
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US2564861A
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US2694179A
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US2655631A
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US2779915A
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US2842735A
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US2920266A
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US3098198A
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US3293542A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-11-02 | 1974-05-04 | 1974-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-02 | 1978-05-04 | 1978-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-02 | 1982-05-04 | 1982-11-03 | $7700.00 | Window Closed / Lapsed |