US3684614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the manufacture of optical display devices
Assignee: Individual
•
Filing: 1969-08-11
•
Granted: 1972-08-15
•
Expires: 1989-08-11
Abstract
Abstract A DISPLAY MATERIAL AND AN APPARATUS FOR AUTOMATICALLY MANUFACTURING SAME ARE PROVIDED. THE DISPLAY IS COMPOSED OF A PLURALITY OF GRATINGS OR GRIDS WHICH ARE SEPARATED FROM EACH OTHER BY A THIN TRANSPARENT SHEET MATERIAL, SUCH AS A PLASTIC POLYMER, SO AS TO PROVIDE AN OPTICAL EFFECT WHICH INCLUDES LIGHT INTERFERRENCE EFFECTS SUCH AS MOIRE FRINGE BANDS WHICH ARE ATTENTION-GETTING.
Inventors
- 👤 Jerome H Lemelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:32
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/12; B32B7/14; B32B27/00; B32B27/06; B32B27/08; B32B37/00; B32B37/12; B32B37/1284; B32B37/1292; B32B37/14; B32B37/16; B32B37/20; B32B37/203
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) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |