US2585519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exposing apparatus for photographic contact printing
Assignee: Chemische Fabriek L Van der Grinten NV
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Filing: 1947-07-16
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Granted: 1952-02-12
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Expires: 1967-07-16
Abstract
No abstract record available.
Inventors
- 👤 Lodewijk Pieter Frans Grinten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:29
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02; G03B27/14; G03B27/16
Claims Analysis
Total Claims: 0
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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) | 1955-02-11 | 1955-08-13 | 1956-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-11 | 1959-08-13 | 1960-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-11 | 1963-08-13 | 1964-02-12 | $7700.00 | Window Closed / Lapsed |