US2346784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and means for making polarizing bodies
Assignee: Polaroid Corp
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Filing: 1938-03-02
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Granted: 1944-04-18
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Expires: 1958-03-02
Abstract
No abstract record available.
Inventors
- 👤 Pollack Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:37
CPC Classifications
G; G02; G02B; G02B5/00; G02B5/30; G02B5/3025; G02B5/3033; Y; Y10; Y10S; Y10S264/00; Y10S264/58; Y10S425/00; Y10S425/033
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-04-18 | 1947-10-18 | 1948-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-04-18 | 1951-10-18 | 1952-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-04-18 | 1955-10-18 | 1956-04-18 | $7700.00 | Window Closed / Lapsed |