US3260926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magnetic field measurement method and apparatus
Assignee: Individual
•
Filing: 1963-06-03
•
Granted: 1966-07-12
•
Expires: 1983-06-03
Abstract
No abstract record available.
Inventors
- 👤 Barry A Coles
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:29
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/02; G01R33/028; G01R33/20; G01R33/24
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
A METHOD OF STUDYING MAGNETIC RESONANCE PHENOMENA COMPRISING THE STEPS OF PLACING IN A MAGNETIC FIELD A SAMPLE OF THE MATERIAL TO BE STUDIED, TWO COIL WINDINGS, A FIRST SURROUNDING THE SAMPLE, AND DETECTING MANS ARRANGED TO GIVE AN INDICATION WHEN THE MAGNETIC FIELD STRENGTH REACHES A PREDETERMINED VALUE, CONNECTING SAID FIRST COIL WINDING TO A RESONANCE DETECTOR, ARRANGING THAT THE OUTPUT FROM A HIGH GAIN, PHASE REVERSING, D.C. AMPLIFIER HAVING A FEEDBACK CAPACITOR BETWEEN ITS OUTPUT AND INPUT AND A SERIES-CONNECTED INPUT RESISTOR IS HELD AT ZERO, AUTOMATICALLY APPLYING THE VOLTAGE FROM SAID SECOND COIL WINDING TO SAID AMPLIFIER INPUT AND SIMULTANEOUSLY RE-
References Cited (Backward Citations)
US2916690A
Cited
US3034040A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |