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US2481189A
Expired / Lapsed
US
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Image-carrying element for lightpolarizing images
Assignee: Polaroid Corp
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Filing: 1946-06-14
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Granted: 1949-09-06
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Expires: 1966-06-14
Abstract
No abstract record available.
Inventors
- 👤 Barnes Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:26
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/30; G02B5/3025; G02B5/3033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US568496A
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US642941A
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US742405A
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US2169250A
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GB497373A
Cited
GB526780A
Cited
US2373035A
Cited
US2409923A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-09-05 | 1953-03-07 | 1953-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-09-05 | 1957-03-07 | 1957-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-09-05 | 1961-03-07 | 1961-09-06 | $7700.00 | Window Closed / Lapsed |