US2354048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flexible lenticular optical sheet
Assignee: 3M Co
•
Filing: 1940-08-03
•
Granted: 1944-07-18
•
Expires: 1960-08-03
Abstract
No abstract record available.
Inventors
- 👤 Philip V Palmquist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:24
CPC Classifications
B; B44; B44F; B44F1/00; B44F1/02; B44F1/04; G; G02; G02B; G02B5/00; G02B5/12; G02B5/126; G02B5/128; G09; G09F; G09F13/00; G09F13/16; Y; Y10; Y10S; Y10S362/00; Y10S362/812
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) | 1947-07-18 | 1948-01-17 | 1948-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-07-18 | 1952-01-17 | 1952-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-07-18 | 1956-01-17 | 1956-07-18 | $7700.00 | Window Closed / Lapsed |