Education and demonstration – Mathematics
Reexamination Certificate
2011-08-16
2011-08-16
Fernstrom, Kurt (Department: 3711)
Education and demonstration
Mathematics
Reexamination Certificate
active
07997902
ABSTRACT:
Apparatus for educational use, comprising a plurality of pieces and a regular array of indicia. The pieces are dimensioned and arranged, and the indicia are arrayed, to allow a plurality of the pieces to be juxtaposed adjacent to the indicia, covering a plurality of the indicia, such that each piece covers a single indicium or an integral number of indicia and each indicium covered by a piece is visible through that piece.
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Fernstrom Kurt
Wolf Greenfield & Sacks P.C.
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