US3475615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for the detection of flaws in a transparent material
Assignee: GEN OPTIQUE SOC
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Filing: 1967-11-29
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Granted: 1969-10-28
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Expires: 1987-11-29
Abstract
No abstract record available.
Inventors
- 👤 Francois F Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:11
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/84; G01N21/88; G01N21/89; G01N21/8901; G01N21/892; G01N21/896
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2753464A
Cited
US3041462A
Cited
US3338130A
Cited
US3227037A
Cited
US3386579A
Cited
US3302786A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-27 | 1973-04-28 | 1973-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-27 | 1977-04-28 | 1977-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-27 | 1981-04-28 | 1981-10-28 | $7700.00 | Window Closed / Lapsed |