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Patent US2674159A successfully refreshed from Google Patents.
US2674159A
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US
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Process for the manufacture of light-polarizing sheets
Assignee: Polaroid Corp
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Filing: 1951-03-16
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Granted: 1954-04-06
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Expires: 1971-03-16
Abstract
No abstract record available.
Inventors
- 👤 Frederick J Binda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:41
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)
US2356250A
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US2173304A
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US2255940A
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US2263249A
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US2398506A
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US2423503A
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US2445579A
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US2445555A
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US2481189A
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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) | 1957-04-05 | 1957-10-05 | 1958-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-05 | 1961-10-05 | 1962-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-05 | 1965-10-05 | 1966-04-06 | $7700.00 | Window Closed / Lapsed |