US3131345A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for measuring magnetic fields, particularly the earth magnetic field
Assignee: Commissariat à l'Énergie Atomique et Aux Énergies Alternatives
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Filing: 1960-01-29
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Granted: 1964-04-28
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Expires: 1980-01-29
Abstract
No abstract record available.
Inventors
- 👤 Abragam Anatole
- 👤 Combrisson Jean
- 👤 Solomon Ionel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:25
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A DEVICE FOR MEASURING A WEAK MAGNETIC FIELD WHICH COMPRISES, IN COMBINATION, A CONTAINER PLACED IN SAID FIELD, IN THIS CONTAINER A SOLUTION CONSISTING OF A SOLVENT CONTAINING ATOMIC NUCLEI HAVING AN ANGULAR MOMENTUM AND A MAGNETIC MOMENT BOTH KNOWN AND DIFFERENT FROM ZERO AND OF A PARAMAGNETIC SUBSTANCE HAVING A HYPERFINE STRUCTURE OF THE STATIONARY TYPE WITH A NON-ZERO SPLITTING IN SAID MAGNETIC FIELD AND WITH AT LEAST TWO NARROW ELECTRONIC RESONANCE LINES OF CLOSE FREQUENCIES SATURABLE BY OPPOSITELY POLARIZED RADIO-FREQUENCY FIELDS, SAID SUBSTANCE BEING DISSOLVED IN SAID SOLVENT, MEANS FOR PRODUCING IN
Claim 2
Independent Claim
94 words
A DEVICE FOR MEASURING A WEAK MAGNETIC FIELD WHICH COMPRISES, IN COMBINATION, A CONTAINER PLACED IN SAID FIELD, IN THIS CONTAINER A SOLUTION CONSISTING OF A SOLVENT CONTAINING ATOMIC NUCLEI HAVING AN ANGULAR MOMENTUM AND A MAGNETIC MOMENT BOTH KNOWN AND DIFFERENT FROM ZERO AND OF A PARAMAGNETIC SUBSTANCE HAVING A HYPERFINE STRUCTURE OF THE STATIONARY TYPE WITH A NON-ZERO SPLITTING IN SAID MAGNETIC FIELD AND WITH AT LEAST TWO NARROW ELECTRONIC RESONANCE LINES OF CLOSE FREQUENCIES SATURABLE BY OPPOSITELY POLARIZED RADIO-FREQUENCY FIELDS, SAID SUBSTANCE BEING DISSOLVED IN SAID SOLVENT, MEANS FOR PRODUCING IN
References Cited (Backward Citations)
BE566137A
Cited
FR1180455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |