US3918178A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Educational puzzle
Assignee: Individual
•
Filing: 1974-09-09
•
Granted: 1975-11-11
•
Expires: 1994-09-09
Abstract
Abstract An educational puzzle or aid comprises alphanumeric characters in block form and having tongue and groove interconnections to orient sequence of a succession of the characters.
Inventors
- 👤 Colleen Riley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:23
CPC Classifications
G; G09; G09B; G09B1/00; G09B1/32; G09B1/36
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
60 words
An educational aid comprising a. an ordered succession of alphanumeric characters each in three dimensional block form, the block forms having character outlines, b. each of the block form characters having a single tongue and groove interconnection within the height of a character, and c. said interconnections being staggered relative to a line extending lengthwise through said succession of characters.
Claim 2
Dependent Claim
60 words
An educational aid comprising a. an ordered succession of alphanumeric characters each in three dimensional block form, the block forms having character outlines, b. each of the block form characters having a single tongue and groove interconnection within the height of a character, and c. said interconnections being staggered relative to a line extending lengthwise through said succession of characters.
Claim 3
Dependent Claim
16 words
The combination of claim 1 wherein the tongues of all characters point in the same direction.
Claim 4
Dependent Claim
15 words
The combination of claim 1 wherein the tops of at least certain characters are co-linear.
Claim 5
Dependent Claim
14 words
The combination of claim 3 wherein the tops of all the characters are co-linear.
Claim 6
Dependent Claim
13 words
The combination of claim 1 wherein the bottoms of certain characters are co-linear.
Claim 7
Dependent Claim
13 words
The combination of claim 5 wherein the bottoms of alternate characters are co-linear.
Claim 8
Dependent Claim
23 words
The combination of claim 1 wherein said characters comprise the arabic numerals 1, 2, 3, 4, 5, 6, 7, 8, 9 and 0.
Claim 9
Dependent Claim
23 words
The combination of claim 7 wherein certain odd numbered characters are of one height, and certain even number characters are of another height.
Claim 10
Dependent Claim
32 words
The combination of claim 7 wherein the numerals 1, 3, 5, 6, 8 and 0 are of one height, and the numerals 2, 4, 7 and 9 are of substantially lesser height.
Claim 11
Dependent Claim
47 words
The combination of claim 7 wherein alternate numerals 1, 3 and 5 in the group 1, 2, 3, 4 and 5 are of the same height, and alternate numerals 6, 8 and 0 in the group 6, 7, 8, 9 and 0 are of the same height.
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) | 1978-11-10 | 1979-05-12 | 1979-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-10 | 1983-05-12 | 1983-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-10 | 1987-05-12 | 1987-11-11 | $7700.00 | Window Closed / Lapsed |