TWO-SIDED MANIPULATIVE PUZZLE WITH MOVABLE SQUARES

A puzzle in which alphabet letters or other graphics are displayed in movable squares forming a grid on a front side of the puzzle. On the back side of the puzzle is another grid of movable squares containing alphabet letters or other graphics. Each square is a part of each of two mutually transvers...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: DONALD ALFRED ROSENWINKEL, WAYNE ALBERT KUNA, JOHN VINCENT ZARUBA
Format: Patent
Sprache:eng
Schlagworte:
Online-Zugang:Volltext bestellen
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