Reusable ball units able to be repeatedly modeled

  • US 20020102905A1
  • Filed: 01/30/2001
  • Published: 08/01/2002
  • Est. Priority Date: 01/30/2001
  • Status: Abandoned Application
First Claim
Patent Images

1. A reusable ball unit able to be repeatedly modeled in three dimensions, comprising at least a ball bag and a lot of magnetic beads, said magnetic beads all have magnetic attraction and are fully filled in said ball bag to make gathering of said magnetic beads.

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