US3564924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Magneto-optic pressure measuring device
Assignee: General Electric Co
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Filing: 1968-08-15
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Granted: 1971-02-23
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Expires: 1988-08-15
Abstract
Abstract NON-DESTRUCTIVE TESTING APPARATUS INCLUDING A REFLECTING PLATE-LIKE FARADAY BODY AND A SOURCE OF POLARIZED LIGHT AND A LIGH ANALYZER ENABLES USE OF THE MAGNETO-OPTIC EFFECT IN SENSING MAGNETIC FIELDS INCLUDING THOSE GENERATED BY WEAK ELECTRIC CURRENTS.
Inventors
- 👤 Warren De Sorbo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:57
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/09; G01; G01L; G01L11/00; G01L11/02
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) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |