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US3534256A
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US
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Magnetic susceptibility measuring means utilizing a bridge circuit with one arm having a pair of fixed coils and a pair of sample coils
Assignee: Individual
•
Filing: 1968-09-18
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Granted: 1970-10-13
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Expires: 1988-09-18
Abstract
No abstract record available.
Inventors
- 👤 Clark E Johnson Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 03:11
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/12; G01R33/16; G01N; G01N27/00; G01N27/02; G01N27/023
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3075145A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-12 | 1974-04-13 | 1974-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-12 | 1978-04-13 | 1978-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-12 | 1982-04-13 | 1982-10-13 | $7700.00 | Window Closed / Lapsed |