US3535631A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for determining thickness variations across electrically conductive material
Assignee: Agfa Gevaert NV
•
Filing: 1967-05-15
•
Granted: 1970-10-20
•
Expires: 1987-05-15
Abstract
No abstract record available.
Inventors
- 👤 Wilfried Florent De Geest
- 👤 Josephus Cyrillus Eeman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:39
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1984166A
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US1886508A
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US2653298A
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US3384815A
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US3354388A
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US3391337A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |