US3755921A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flash-card educational aid for teaching sequences
Assignee: Individual
•
Filing: 1972-05-08
•
Granted: 1973-09-04
•
Expires: 1992-05-08
Abstract
Abstract A flash-card type educational aid comprising a board having top and bottom (or left and right side) portions, each of which portions is provided with an equal and identically arranged plurality of slots for removably mounting indicia bearing inserts therein to form a sequence comprising said inserts, and a cover pivotally secured to one of said portions for alternately revealing and concealing a sequence of indicia bearing inserts formed in one of said plurality of slots whereby the ability to duplicate a flashed sequence in said other plurality of slots may be tested.
Inventors
- 👤 A Heller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:05
CPC Classifications
G; G09; G09B; G09B19/00; G09B19/003
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
128 words
An educational aid comprising a board having first and second portions, each said portion having an equal and identically arranged plurality of slots, first and second sets of indicia bearing inserts removably mountable in said slots to form a sequence, said sets being duplicates of each other and each comprising a plurality of said inserts equal to said portion slot plurality, and a cover pivotally secured to one of said portions, whereby said cover can be raised to reveal a sequence of one of said sets of indicia bearing inserts mounted in the slots in said one portion and lowered to conceal said sequence and enable a viewer to attempt to duplicate said sequence in the slots in the other said portion with the other of said sets.
Claim 2
Dependent Claim
128 words
An educational aid comprising a board having first and second portions, each said portion having an equal and identically arranged plurality of slots, first and second sets of indicia bearing inserts removably mountable in said slots to form a sequence, said sets being duplicates of each other and each comprising a plurality of said inserts equal to said portion slot plurality, and a cover pivotally secured to one of said portions, whereby said cover can be raised to reveal a sequence of one of said sets of indicia bearing inserts mounted in the slots in said one portion and lowered to conceal said sequence and enable a viewer to attempt to duplicate said sequence in the slots in the other said portion with the other of said sets.
Claim 3
Dependent Claim
30 words
An educational aid as claimed in claim 1, wherein the first and second portions are respectively top and bottom portions and the pluralities of slots are arranged in horizontal rows.
Claim 4
Dependent Claim
31 words
An educational aid as claimed in claim 1, wherein the first and second portions are respectively left and right side portions and the pluralities of slots are arranged in vertical rows.
Claim 5
Dependent Claim
18 words
An educational aid as claimed in claim 1, wherein the indicia borne by the inserts are arbitrary symbols.
Claim 6
Dependent Claim
18 words
An educational aid as claimed in claim 1, wherein the indicia borne by the inserts are intelligent symbols.
References Cited (Backward Citations)
US1509371A
Cited
US1587026A
Cited
GB270881A
Cited
US2659163A
Cited
US3081560A
Cited
US3172214A
Cited
US3539077A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |