US2859403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic resonance apparatus
Assignee: Schlumberger Well Surveying Corp
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Filing: 1956-09-14
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Granted: 1958-11-04
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Expires: 1976-09-14
Abstract
No abstract record available.
Inventors
- 👤 Francois F Kirchner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:12
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/44; H; H03; H03L; H03L7/00; H03L7/26
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |