US2933144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well logging method and apparatus
Assignee: AMERICAN PERCUSSION TOOL Co
•
Filing: 1954-08-12
•
Granted: 1960-04-19
•
Expires: 1974-08-12
Abstract
No abstract record available.
Inventors
- 👤 James G Scott
- 👤 Roland A Freeman
- 👤 Reese T Houston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 11:17
CPC Classifications
G; G01; G01V; G01V1/00; G01V1/40; G01V1/42; E; E21; E21B; E21B47/00; E21B47/12; E21B47/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1843725A
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US1891062A
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US2651027A
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US2655343A
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US2557168A
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US2554005A
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US2728405A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |