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Class Information
Number: 273/154
Name: Amusement devices: games > Puzzles > Balancing ovoids
Description: Puzzles in the shape of ovoids that can by manipulation be so balanced that they will stand on end.

Patents under this class:

Patent Number Title Of Patent Date Issued
6688661 Bumper beam Feb. 10, 2004
4522403 Balance toy Jun. 11, 1985
4489944 Manipulative egg-shaped puzzle Dec. 25, 1984

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