US2908210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exposure apparatus
Assignee: AB Dick Co
•
Filing: 1954-09-20
•
Granted: 1959-10-13
•
Expires: 1974-09-20
Abstract
No abstract record available.
Inventors
- 👤 Frans W Ruijs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:46
CPC Classifications
G; G03; G03B; G03B27/00; G03B27/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE154210C
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GB191021990A
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GB191209123A
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US1276476A
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US1602051A
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US1822489A
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GB564593A
Cited
US2457926A
Cited
US2643699A
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US2762281A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-12 | 1963-04-13 | 1963-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-12 | 1967-04-13 | 1967-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-12 | 1971-04-13 | 1971-10-13 | $7700.00 | Window Closed / Lapsed |