Patent US3575773A successfully refreshed from Google Patents.
US3575773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light reflective device
Assignee: LOUIS B COURTOT
•
Filing: 1967-12-28
•
Granted: 1971-04-20
•
Expires: 1987-12-28
Abstract
Abstract A LIGHT REFLECTIVE PANEL FOR DECORATIVE AND INFORMATIVE PURPOSES WHICH IS SUBSTANTIALLY IMMUNE TO DETERIORATION FROM NATURAL ELEMENTS AND HEAVY TRANSVERSE LOADING CONDITIONS IS PROVIDED. A CORE MATERIAL HAVING SELECTIVELY COLORED LIGHT REFLECTIVE SURFACES, PARALLEL TO THE PLANE OF THE ARRAY, IS ARRANGED SO THAT TH E COLORED PATTERNS DIFFERS AND IS TOTALLY OBSCURED IN SOME DIRECTION DEPENDING ON THE VIEWING ANGLE AND ORIENTATION RELATIVE TO A LIGHT SOURCE. THE CORE MATERIAL IS ENCAPSULATED WITHIN OR SANDWICHED BETWEEN TRANSPARENT MATERIALS IN ORDER TO MAINTAIN THE ORIENTATION OF THE ARRAY OF LIGHT REFLECTIVE SURFACES AND TO PRESERVE THEIR INTEGRITY.
Inventors
- 👤 Louis B Courtot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:05
CPC Classifications
G; G09; G09F; G09F13/00; G09F13/16; B; B44; B44F; B44F1/00; B44F1/02; B44F1/04; E; E01; E01F; E01F9/00; E01F9/50; E01F9/553; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24149; Y10T428/24165
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |