US2440105A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Image-carrying film having lightpolarizing and nonpolarizing images
Assignee: Polaroid Corp
•
Filing: 1945-04-09
•
Granted: 1948-04-20
•
Expires: 1965-04-09
Abstract
No abstract record available.
Inventors
- 👤 Edwin H Land
- 👤 Grabau Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:46
CPC Classifications
G; G03; G03C; G03C9/00; G03C9/04
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1422527A
Cited
US2280297A
Cited
US2238207A
Cited
US2203687A
Cited
US2329543A
Cited
US2165974A
Cited
US2311058A
Cited
US2373035A
Cited
US2312852A
Cited
US2289714A
Cited
US2289715A
Cited
US2315373A
Cited
US2360225A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-04-20 | 1951-10-20 | 1952-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-04-20 | 1955-10-20 | 1956-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-04-20 | 1959-10-20 | 1960-04-20 | $7700.00 | Window Closed / Lapsed |