Patent US3287827A successfully refreshed from Google Patents.
US3287827A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Teaching and using transparent overlays of different colors
Assignee: Individual
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Filing: 1964-05-19
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Granted: 1966-11-29
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Expires: 1984-05-19
Abstract
No abstract record available.
Inventors
- 👤 Robert L Lippman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:14
CPC Classifications
G; G09; G09B; G09B3/00; G09B3/02; G09B3/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
180 words
A TEACHING AID ADAPTED TO BE PLACED OVER VISUAL MATTER TO BE LEARNED AND WHICH MATTER APPEARS IN AT LEAST TWO DIFFERENT COLORS, SAID AID COMPRISING; AT LEAST TWO COLORED TRANSPARENT OVERLAY MEANS EACH BEING ADAPTED TO BE SINGLY AND SELECTIVELY PLACED OVER SAID VISUAL MATTER, THE COLOR OF EACH OVERLAY MEANS BEING THE SAME AS A RESPECTIVE ONE OF SAID COLORS OF THE VISUAL MATTER SO AS TO CAMOUFLAGE THE VISUAL MATTER OF THE SAME COLOR AS THE PERTAINING OVERLAY MEANS THEN IN USE AND THEREBY CAUSE THE USER TO DETERMINE THE CAMOUFLAGE MATTER BY VIEWING THE MATTER SHOWING THROUGH THE OVERLAY MEANS THEN IN USE, EACH SAID OVERLAY MEANS COMPRISING A PLURALITY OF PARALLEL STRIPS ADAPTED TO BE SINGLY MOVED TO PERMIT THE USER TO SEE THE PREVIOUSLY CAMOUFLAGED MATTER IN THE CONTEXT OF THE MATTER WHICH SHOWED THROUGH THE SAID OVERLAY MEANS THEN IN USE, MEANS MOVEABLY INTERCONNECTING SAID OVERLAY MEANS, EACH STRIP OF ONE OVERLAY MEANS BEING ADAPTED TO COVER THE SAME PORTION OF SAID VISUAL MATTER AS A RESPECTIVE STRIP OT THE OTHER OVERLAY MEANS.
Claim 2
Dependent Claim
180 words
A TEACHING AID ADAPTED TO BE PLACED OVER VISUAL MATTER TO BE LEARNED AND WHICH MATTER APPEARS IN AT LEAST TWO DIFFERENT COLORS, SAID AID COMPRISING; AT LEAST TWO COLORED TRANSPARENT OVERLAY MEANS EACH BEING ADAPTED TO BE SINGLY AND SELECTIVELY PLACED OVER SAID VISUAL MATTER, THE COLOR OF EACH OVERLAY MEANS BEING THE SAME AS A RESPECTIVE ONE OF SAID COLORS OF THE VISUAL MATTER SO AS TO CAMOUFLAGE THE VISUAL MATTER OF THE SAME COLOR AS THE PERTAINING OVERLAY MEANS THEN IN USE AND THEREBY CAUSE THE USER TO DETERMINE THE CAMOUFLAGE MATTER BY VIEWING THE MATTER SHOWING THROUGH THE OVERLAY MEANS THEN IN USE, EACH SAID OVERLAY MEANS COMPRISING A PLURALITY OF PARALLEL STRIPS ADAPTED TO BE SINGLY MOVED TO PERMIT THE USER TO SEE THE PREVIOUSLY CAMOUFLAGED MATTER IN THE CONTEXT OF THE MATTER WHICH SHOWED THROUGH THE SAID OVERLAY MEANS THEN IN USE, MEANS MOVEABLY INTERCONNECTING SAID OVERLAY MEANS, EACH STRIP OF ONE OVERLAY MEANS BEING ADAPTED TO COVER THE SAME PORTION OF SAID VISUAL MATTER AS A RESPECTIVE STRIP OT THE OTHER OVERLAY MEANS.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |