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VAL-DES-MONTS, QC CA
1. 20090218765 ODD-SHAPED THREE-DIMENSIONAL LOGICAL PUZZLES 09-03-20092. 20090127784 KEYED ACCESS TO HOLLOW THREE-DIMENSIONAL PUZZLES 05-21-2009
3. 20090127783 SHIFTABLE CUBIC PUZZLE WITH SUPERIMPOSED SLIDABLE ELEMENTS 05-21-2009
4. 20090091570 DIVIDING METHOD FOR THREE-DIMENSIONAL LOGICAL PUZZLES 04-09-2009
5. 20090091080 DIVIDING METHOD FOR THREE-DIMENSIONAL LOGICAL PUZZLES 04-09-2009