US3479168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making metallic polarizer by drawing fusion
Assignee: Polaroid Corp
•
Filing: 1964-03-09
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Granted: 1969-11-18
•
Expires: 1984-03-09
Abstract
No abstract record available.
Inventors
- 👤 George R Bird
- 👤 Maxfield Parrish Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:44
CPC Classifications
B; B21; B21C; B21C37/00; B21C37/04; B21C37/047; C; C03; C03B; C03B37/00; C03B37/01; C03B37/02; C03B37/025; C03B37/0253; C03B37/026; C03B37/028; G; G02; G02B; G02B5/00; G02B5/30; G02B5/3025; G02B5/3058; C03B2205/00; C03B2205/04; C03B2205/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US220907A
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US1793529A
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US2224214A
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US2608722A
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US2775070A
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US3031351A
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US3004368A
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US3272063A
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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) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |