Patent US2930228A successfully refreshed from Google Patents.
US2930228A
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US
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Apparatus for detecting and recording defects in a strip
Assignee: United States Steel Corp
•
Filing: 1956-11-30
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Granted: 1960-03-29
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Expires: 1976-11-30
Abstract
No abstract record available.
Inventors
- 👤 Edward S Lawrence
- 👤 Earll R Muddiman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:17
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/89; Y; Y10; Y10T; Y10T83/00; Y10T83/626; Y10T83/637
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US630598A
Cited
US1969221A
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US1958138A
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US2229638A
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US2246906A
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US2356841A
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US2512355A
Cited
US2521772A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-03-29 | 1963-09-28 | 1964-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-03-29 | 1967-09-28 | 1968-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-03-29 | 1971-09-28 | 1972-03-29 | $7700.00 | Window Closed / Lapsed |