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US3530045A
Expired / Lapsed
US
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Electrically responsive color-forming method of nondestructive testing
Assignee: Individual
•
Filing: 1966-12-27
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Granted: 1970-09-22
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Expires: 1986-12-27
Abstract
No abstract record available.
Inventors
- 👤 James R Alburger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 19:51
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/91
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2128228A
Cited
US2287122A
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US3123806A
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US3020745A
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US3141837A
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US3282805A
Cited
US3366554A
Cited
US3384556A
Cited
US3419479A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-09-21 | 1974-03-23 | 1974-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-09-21 | 1978-03-23 | 1978-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-09-21 | 1982-03-23 | 1982-09-22 | $7700.00 | Window Closed / Lapsed |