Patent US2916623A successfully refreshed from Google Patents.
US2916623A
Expired / Lapsed
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Method and means for detecting flaws in metals
Assignee: Knapp Mills Inc
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Filing: 1958-05-02
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Granted: 1959-12-08
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Expires: 1978-05-02
Abstract
No abstract record available.
Inventors
- 👤 Neil F Ritchey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:39
CPC Classifications
G; G01; G01N; G01N23/00; G01N23/02; G01N23/06; G01N23/18; G01N23/083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
THE METHOD OF DETECTING FLAWS IN METAL HAVING AN UNEVEN SURFACE, WHICH COMPRISES FILLING THE UNEVEN SURFACE WITH AN AUXILIARY SUBSTANCE HAVING AN OPACITY TO RADIATION SUBSTANTIALY EQUAL TO THE OPACITY OF THE METAL AND DIRECTING PENETRATING RAYS UPON SAID SURFACE TO DETECT FLAWS THEREIN.
Claim 2
Independent Claim
45 words
THE METHOD OF DETECTING FLAWS IN METAL HAVING AN UNEVEN SURFACE, WHICH COMPRISES FILLING THE UNEVEN SURFACE WITH AN AUXILIARY SUBSTANCE HAVING AN OPACITY TO RADIATION SUBSTANTIALY EQUAL TO THE OPACITY OF THE METAL AND DIRECTING PENETRATING RAYS UPON SAID SURFACE TO DETECT FLAWS THEREIN.
References Cited (Backward Citations)
US753310A
Cited
US1622149A
Cited
US2162178A
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US2162420A
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US2475596A
Cited
US2726339A
Cited
US2719926A
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US2833664A
Cited
US2870336A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-07 | 1963-06-08 | 1963-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-07 | 1967-06-08 | 1967-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-07 | 1971-06-08 | 1971-12-08 | $7700.00 | Window Closed / Lapsed |