US2690468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Drill hole logging probe
Assignee: Individual
•
Filing: 1947-04-04
•
Granted: 1954-09-28
•
Expires: 1967-04-04
Abstract
No abstract record available.
Inventors
- 👤 Faul Henry
- 👤 Robert J Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:25
CPC Classifications
G; G01; G01V; G01V5/00; G01V5/04; G01V5/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1930322A
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US1459047A
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US2001946A
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US2173643A
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US2195630A
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US2412575A
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US2416702A
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US2424545A
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US2425834A
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US2449570A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-27 | 1958-03-29 | 1958-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-27 | 1962-03-29 | 1962-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-27 | 1966-03-29 | 1966-09-28 | $7700.00 | Window Closed / Lapsed |