Patent US2427950A successfully refreshed from Google Patents.
US2427950A
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Method and apparatus for determining the dip of strata traversed by a borehole
Assignee: Schlumberger Well Surveying Corp
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Filing: 1943-01-01
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Granted: 1947-09-23
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Expires: 1963-01-01
Abstract
No abstract record available.
Inventors
- 👤 Doll Henri-Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:21
CPC Classifications
G; G01; G01V; G01V3/00; G01V3/18; G01V3/20; E; E21; E21B; E21B47/00; E21B47/02; E21B47/026
Claims Analysis
Total Claims: 0
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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) | 1950-09-22 | 1951-03-24 | 1951-09-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-22 | 1955-03-24 | 1955-09-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-22 | 1959-03-24 | 1959-09-23 | $7700.00 | Window Closed / Lapsed |