US2780140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prism zoom system having deviation correcting means
Assignee: Eastman Kodak Co
•
Filing: 1955-03-31
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Granted: 1957-02-05
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Expires: 1975-03-31
Abstract
No abstract record available.
Inventors
- 👤 Benjamin E Luboshez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:25
CPC Classifications
G; G02; G02B; G02B15/00; G02B15/02; G02B13/00; G02B13/08; G02B13/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1647631A
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US818553A
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US1680534A
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US1758801A
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US1931992A
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GB338962A
Cited
US1905442A
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US1898787A
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US1932082A
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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) | 1960-02-05 | 1960-08-06 | 1961-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-05 | 1964-08-06 | 1965-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-05 | 1968-08-06 | 1969-02-05 | $7700.00 | Window Closed / Lapsed |