Patent US3353897A successfully refreshed from Google Patents.
US3353897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Display devices
Assignee: Individual
•
Filing: 1965-10-23
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Granted: 1967-11-21
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Expires: 1985-10-23
Abstract
No abstract record available.
Inventors
- 👤 Jerome H Lemelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:35
CPC Classifications
G; G09; G09F; G09F19/00; G09F19/12; G09F19/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
AN IMPROVED MULTIPATTERN DISPLAY DEVICE OPERATIVE TO PROVIDE A VARIABLE LIGHT PATTERN TO AN OBSERVER WHICH APPEARS TO SHIFT AS THE ANGLE BETWEEN THE OBSERVER AND THE DEVICE VARIES, COMPRISING: (A) A RELATIVELY THIN SHEET OF TRANSPARANT MATERIAL HAVING A FRONT FACE AND A REAR FACE; (B) A PLURALITY OF FIRST TRANSPARENT, PARALLEL, ELONGATED AND CLOSELY SPACED LENS FORMATIONS IN SAID FRONT FACE; (C) A PLURALITY OF SECOND ELONGATED LENS FORMATIONS IN SAID REAR FACE PARALLEL TO SAID FIRST LENS FORMATIONS AND HAVING A HIGHLY REFLECTIVE COATING THEREON FOR REFLECTING THE LIGHT WHICH ENTERS SAID SHEET TO A GIVEN OBSERVATION POINT WITH A FIRST BRIGHTNESS; AND (D) AT LEAST ONE THIRD FORMATION IN SAID REAR FACE INTERPOSED BETWEEN SAID SECOND FORMATIONS AND DIFFERING THEREFROM FOR REFLECTING THE LIGHT WHICH ENTERS SAID SHEET TO GIVEN OBSERVATION POINT WITH A SECOND BRIGHTNESS WHICH IS OF LESS INTENSITY THAN SAID FIRST BRIGHTESS.
Claim 2
Dependent Claim
149 words
AN IMPROVED MULTIPATTERN DISPLAY DEVICE OPERATIVE TO PROVIDE A VARIABLE LIGHT PATTERN TO AN OBSERVER WHICH APPEARS TO SHIFT AS THE ANGLE BETWEEN THE OBSERVER AND THE DEVICE VARIES, COMPRISING: (A) A RELATIVELY THIN SHEET OF TRANSPARANT MATERIAL HAVING A FRONT FACE AND A REAR FACE; (B) A PLURALITY OF FIRST TRANSPARENT, PARALLEL, ELONGATED AND CLOSELY SPACED LENS FORMATIONS IN SAID FRONT FACE; (C) A PLURALITY OF SECOND ELONGATED LENS FORMATIONS IN SAID REAR FACE PARALLEL TO SAID FIRST LENS FORMATIONS AND HAVING A HIGHLY REFLECTIVE COATING THEREON FOR REFLECTING THE LIGHT WHICH ENTERS SAID SHEET TO A GIVEN OBSERVATION POINT WITH A FIRST BRIGHTNESS; AND (D) AT LEAST ONE THIRD FORMATION IN SAID REAR FACE INTERPOSED BETWEEN SAID SECOND FORMATIONS AND DIFFERING THEREFROM FOR REFLECTING THE LIGHT WHICH ENTERS SAID SHEET TO GIVEN OBSERVATION POINT WITH A SECOND BRIGHTNESS WHICH IS OF LESS INTENSITY THAN SAID FIRST BRIGHTESS.
References Cited (Backward Citations)
USRE19070E
Cited
US2351034A
Cited
US1918705A
Cited
US2002090A
Cited
US2303113A
Cited
US2499453A
Cited
US2639918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-20 | 1971-05-22 | 1971-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-20 | 1975-05-22 | 1975-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-20 | 1979-05-22 | 1979-11-21 | $7700.00 | Window Closed / Lapsed |