Patent US2474958A successfully refreshed from Google Patents.
US2474958A
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US
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Apparatus for making color separation negatives
Assignee: Mitsubishi Shindoh Co Ltd
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Filing: 1941-11-21
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Granted: 1949-07-05
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Expires: 1961-11-21
Abstract
No abstract record available.
Inventors
- 👤 Ralph W Richards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:25
CPC Classifications
G; G03; G03B; G03B33/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-04 | 1953-01-03 | 1953-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-04 | 1957-01-03 | 1957-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-04 | 1961-01-03 | 1961-07-05 | $7700.00 | Window Closed / Lapsed |