US2884589A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Well logging recording apparatus
Assignee: Atlantic Richfield Co
•
Filing: 1954-05-17
•
Granted: 1959-04-28
•
Expires: 1974-05-17
Abstract
No abstract record available.
Inventors
- 👤 William M Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:45
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2393009A
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US2648822A
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US2501791A
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US2754475A
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US2602836A
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US2564861A
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US2629000A
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US2654064A
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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) | 1962-04-27 | 1962-10-27 | 1963-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-27 | 1966-10-27 | 1967-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-27 | 1970-10-27 | 1971-04-28 | $7700.00 | Window Closed / Lapsed |