US3393362A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for detecting irregularities in a metallic surface
Assignee: Xerox Corp
•
Filing: 1964-10-30
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Granted: 1968-07-16
•
Expires: 1984-10-30
Abstract
No abstract record available.
Inventors
- 👤 Raymond T Wright
- 👤 James E Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:44
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1649180A
Cited
US1702595A
Cited
GB734909A
Cited
US3023731A
Cited
US2953470A
Cited
US2941144A
Cited
US3225296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |