Patent US2604002A successfully refreshed from Google Patents.
US2604002A
Expired / Lapsed
US
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Optical infinity sight
Assignee: Eastman Kodak Co
•
Filing: 1944-11-28
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Granted: 1952-07-22
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Expires: 1964-11-28
Abstract
No abstract record available.
Inventors
- 👤 Raymond W Wengel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:16
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/14
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1678493A
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US1930498A
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US1985067A
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GB437444A
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US2042049A
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US2187057A
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US2217930A
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US2313204A
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US2357913A
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US2393308A
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US2393832A
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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) | 1955-07-22 | 1956-01-21 | 1956-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-22 | 1960-01-21 | 1960-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-22 | 1964-01-21 | 1964-07-22 | $7700.00 | Window Closed / Lapsed |