US3396024A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic silver halide multilayer material for correcting inadequate contrast
Assignee: Agfa Gevaert NV
•
Filing: 1964-04-06
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Granted: 1968-08-06
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Expires: 1984-04-06
Abstract
No abstract record available.
Inventors
- 👤 Hellmig Ehrhard
- 👤 Moll Franz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:24
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1910877A
Cited
US1994627A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-06 | 1972-02-05 | 1972-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-06 | 1976-02-05 | 1976-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-06 | 1980-02-05 | 1980-08-06 | $7700.00 | Window Closed / Lapsed |