US2453336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Periscope lens system
Assignee: Eastman Kodak Co
•
Filing: 1945-03-31
•
Granted: 1948-11-09
•
Expires: 1965-03-31
Abstract
No abstract record available.
Inventors
- 👤 Orser William Donald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:03
CPC Classifications
G; G02; G02B; G02B23/00; G02B23/02; G02B23/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US984929A
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US1091933A
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US1290744A
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US1445284A
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US1468762A
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US1478704A
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DE499992C
Cited
GB409465A
Cited
US2085050A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-11-09 | 1952-05-10 | 1952-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-11-09 | 1956-05-10 | 1956-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-11-09 | 1960-05-10 | 1960-11-09 | $7700.00 | Window Closed / Lapsed |