US3417252A
Expired / Lapsed
US
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Fabric flaw detecting apparatus using photoelectric sensing head traveling on a trolley with brushes engaging a conductive strip
Assignee: Appalachian Electronic Instruments Inc
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Filing: 1966-12-15
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Granted: 1968-12-17
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Expires: 1986-12-15
Abstract
No abstract record available.
Inventors
- 👤 Nickell Lawrence Creigh
- 👤 Fertig Raymond Baines
- 👤 Perkins Curtis Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:14
CPC Classifications
D; D04; D04B; D04B35/00; D04B35/10; D04B35/20; D06; D06H; D06H3/00; D06H3/08; G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/89; G01N21/892; G01N21/898; G01N21/8983
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-12-17 | 1972-06-17 | 1972-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-12-17 | 1976-06-17 | 1976-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-12-17 | 1980-06-17 | 1980-12-17 | $7700.00 | Window Closed / Lapsed |