Patent US3209242A successfully refreshed from Google Patents.
US3209242A
Expired / Lapsed
US
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Gyromagnetic resonance methods and apparatus
Assignee: Varian Medical Systems Inc
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Filing: 1963-03-18
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Granted: 1965-09-28
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Expires: 1983-03-18
Abstract
No abstract record available.
Inventors
- 👤 William E Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:27
CPC Classifications
H; H03; H03L; H03L7/00; H03L7/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
THE METHOD OF PRODUCING STABLE GYROMAGNETIC RESONANCE OF A SAMPLE OF MATTER DISPOSED WITHIN A POLARIZING FIELD REGION COMPRISING THE STEPS OF PRODUCING GYROMAGNETIC RESONANCE OF A SAMPLE OF MATTER WHICH IS ELECTROMAGNETICALY CLOSELY COUPLED TO THE FREQUENCY DETERMINATIVE RESONANT CIRCUIT OF AN R.F. OSCILLATOR MEANS, SUCH THAT RESONANCE EFFECTS OF THE SAMPLE SUBSTANTIALLY TEND TO PULL THE FREQUENCY OF SAID OSCILLATOR MEANS SAMPLING A FIRST R.F. RESONANCE OUTPUT FREQUENY SIGNAL OF THE OSCILLATOR MEANS, COMPRISING A FIRST R.F. RESONANCE OUTPUT FREQUENCY SIGNAL WITH A SECOND R.F. FIXED STANDARD FREQUENCY, SAID STANDARD FREQUENCY BEING INDEPENDENT OF SAID R.F. OSCILLATOR AND SAID GYROMAGNETIC RESONANCE SAMPLE OF MATTER DERIVING AN ELECTRICAL CONTROL SIGNAL FROM THE COMPARISON OF THE FIRST AND SECOND R.F. FREQUENCIES FOR STABILIZING THE FREQUENCY OF SAID OSCILLATOR MEANS AGAINST SAID SAMPLE PULLING EF-
Claim 2
Independent Claim
134 words
THE METHOD OF PRODUCING STABLE GYROMAGNETIC RESONANCE OF A SAMPLE OF MATTER DISPOSED WITHIN A POLARIZING FIELD REGION COMPRISING THE STEPS OF PRODUCING GYROMAGNETIC RESONANCE OF A SAMPLE OF MATTER WHICH IS ELECTROMAGNETICALY CLOSELY COUPLED TO THE FREQUENCY DETERMINATIVE RESONANT CIRCUIT OF AN R.F. OSCILLATOR MEANS, SUCH THAT RESONANCE EFFECTS OF THE SAMPLE SUBSTANTIALLY TEND TO PULL THE FREQUENCY OF SAID OSCILLATOR MEANS SAMPLING A FIRST R.F. RESONANCE OUTPUT FREQUENY SIGNAL OF THE OSCILLATOR MEANS, COMPRISING A FIRST R.F. RESONANCE OUTPUT FREQUENCY SIGNAL WITH A SECOND R.F. FIXED STANDARD FREQUENCY, SAID STANDARD FREQUENCY BEING INDEPENDENT OF SAID R.F. OSCILLATOR AND SAID GYROMAGNETIC RESONANCE SAMPLE OF MATTER DERIVING AN ELECTRICAL CONTROL SIGNAL FROM THE COMPARISON OF THE FIRST AND SECOND R.F. FREQUENCIES FOR STABILIZING THE FREQUENCY OF SAID OSCILLATOR MEANS AGAINST SAID SAMPLE PULLING EF-
References Cited (Backward Citations)
US2880321A
Cited
US2867725A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |