US3495166A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Eddy current crack detector systems using crossed coils
Assignee: Magnaflux Corp
•
Filing: 1967-04-10
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Granted: 1970-02-10
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Expires: 1987-04-10
Abstract
No abstract record available.
Inventors
- 👤 Donald E Lorenzi
- 👤 Hamilton Migel
- 👤 Donald T O'connor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:42
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/72; G01N27/82; G01N27/90; G01N27/9006
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2267884A
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US2353211A
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US2955253A
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US2921179A
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US3028092A
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US3035353A
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US3242426A
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US3311818A
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US3354385A
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US3359495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-09 | 1973-08-11 | 1974-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-09 | 1977-08-11 | 1978-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-09 | 1981-08-11 | 1982-02-10 | $7700.00 | Window Closed / Lapsed |