Teaching aid
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United States of America Patent
Stats
-
Feb 10, 1998
Grant Date -
N/A
app pub date -
Jan 13, 1997
filing date -
Jan 13, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A teaching aid including a face panel having a flat front chamber and a plurality of squares defined within the flat front chamber and marked with a respective mark, a partition panel fitted into the flat chamber of the face panel and having a plurality of slots corresponding to the squares of the face panel, a set of mother blocks adapted for fitting into the slots of the partition panel, each mother block having an insertion hole of a particular design, and a set of differently shaped daughter blocks adapted for fitting into the insertion holes of the mother blocks respectively.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
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