Patent US1780952A successfully refreshed from Google Patents.
Patent US2524286A successfully refreshed from Google Patents.
US2524286A
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US
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Flexible noncrystalline self-contained polarizing films and methods of making and using the same
Assignee: Individual
•
Filing: 1946-05-14
•
Granted: 1950-10-03
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Expires: 1966-05-14
Abstract
No abstract record available.
Inventors
- 👤 John F Dreyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:44
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/1333; G02F1/1337; G02B; G02B5/00; G02B5/30; G02B5/3025; G02B5/3033; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/251
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1873951A
Cited
US2046924A
Cited
US1956867A
Cited
US2011553A
Cited
US2236972A
Cited
US2286569A
Cited
US2158129A
Cited
US2256108A
Cited
US2454515A
Cited
US2274706A
Cited
US2237567A
Cited
US2173304A
Cited
US2398506A
Cited
US2400877A
Cited
US2409564A
Cited
US2351933A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-02 | 1954-04-03 | 1954-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-02 | 1958-04-03 | 1958-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-02 | 1962-04-03 | 1962-10-03 | $7700.00 | Window Closed / Lapsed |