US3447871A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic colour printers and processes
Assignee: Ilford Imaging UK Ltd
•
Filing: 1966-01-04
•
Granted: 1969-06-03
•
Expires: 1986-01-04
Abstract
No abstract record available.
Inventors
- 👤 Denis M Neale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:32
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/72; G03B27/73; G03B27/735
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2969016A
Cited
US3355984A
Cited
US3090289A
Cited
US3171340A
Cited
US3298296A
Cited
US3275741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |