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US2524031A
Expired / Lapsed
US
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Apparatus for logging wells
Assignee: Individual
•
Filing: 1945-10-01
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Granted: 1950-10-03
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Expires: 1965-10-01
Abstract
No abstract record available.
Inventors
- 👤 Jan J Arps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:08
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/20; E; E21; E21B; E21B47/00; E21B47/12; E21B47/14; E21B47/18; E21B47/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2225668A
Cited
US2207280A
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US2364957A
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US2352833A
Cited
US2380520A
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US2400170A
Cited
US2388141A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |