US2890019A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Earth borehole logging system
Assignee: Individual
•
Filing: 1956-03-26
•
Granted: 1959-06-09
•
Expires: 1976-03-26
Abstract
No abstract record available.
Inventors
- 👤 Jan J Arps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:31
CPC Classifications
E; E21; E21B; E21B17/00; E21B17/10; E21B17/1057; E21B17/1064; E21B17/1042; E21B41/00; E21B41/0085; E21B47/00; E21B47/12; E21B47/14; E21B47/18; E21B47/20; E21B47/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
IN A LOGGING SYSTEM FOR OIL WELL AND LIKE EARTH BOREHOLES, APPARTUS FOR ESTABLISHING AND SINGALING LOGGING INFORMATION AT THE LOWER AND EN OF THE DRILL STRING, COMPRISING, IN COMBINATION : DRILL COLLAR MEANS ADAPTED TO FROM PART OF THE LOWER END PORTION OF A ROTARY DRILL STRING; STABILIZER MEANS ENCIRCLING SAID DRILL COLLAR MEANS AND ROTABLE WITH RESPECT TO THE LATTER; COOPERATING ELECTRIC GENERATOR MEANS COMPRISED IN PART IN SAID STABILIZER MEANS AND SAID COLLAR MEANS FOR GENERATING AN ELECTRIC
Claim 2
Dependent Claim
81 words
IN A LOGGING SYSTEM FOR OIL WELL AND LIKE EARTH BOREHOLES, APPARTUS FOR ESTABLISHING AND SINGALING LOGGING INFORMATION AT THE LOWER AND EN OF THE DRILL STRING, COMPRISING, IN COMBINATION : DRILL COLLAR MEANS ADAPTED TO FROM PART OF THE LOWER END PORTION OF A ROTARY DRILL STRING; STABILIZER MEANS ENCIRCLING SAID DRILL COLLAR MEANS AND ROTABLE WITH RESPECT TO THE LATTER; COOPERATING ELECTRIC GENERATOR MEANS COMPRISED IN PART IN SAID STABILIZER MEANS AND SAID COLLAR MEANS FOR GENERATING AN ELECTRIC
References Cited (Backward Citations)
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Cited
US2524031A
Cited
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Cited
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Cited
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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) | 1962-06-08 | 1962-12-08 | 1963-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-08 | 1966-12-08 | 1967-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-08 | 1970-12-08 | 1971-06-09 | $7700.00 | Window Closed / Lapsed |