Patent US2600470A successfully refreshed from Google Patents.
US2600470A
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US
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Automatic exposure apparatus for making photographic prints
Assignee: Chemische Fabriek L Van der Grinten NV
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Filing: 1948-10-05
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Granted: 1952-06-17
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Expires: 1968-10-05
Abstract
No abstract record available.
Inventors
- 👤 Breuers Theo Pierre Chretien
- 👤 Linthout Theodoor Hillebrand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:51
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/10; G03B27/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US1591118A
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US1732049A
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US1924758A
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US2220526A
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US2202496A
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US2371925A
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US2431520A
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US2478384A
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US2441912A
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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) | 1955-06-17 | 1955-12-17 | 1956-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-17 | 1959-12-17 | 1960-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-17 | 1963-12-17 | 1964-06-17 | $7700.00 | Window Closed / Lapsed |