Educational toy
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 13, 1985
Grant Date -
N/A
app pub date -
Apr 23, 1984
filing date -
Apr 23, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An educational toy comprising a threaded shaft having blocks rigidly fixed to the opposite ends thereof and rotating and traveling blocks, spaced between the fixed end blocks and containing indicia to be aligned on faces of the rigidly fixed and rotating and traveling blocks.
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Family
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Cited Art Landscape
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