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John Chang

Overall (1994): #29,798 of 165,921Top 20%

2 Patents 1994

Issued Patents 1994

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5372560	Multi-functional sporting equipment	—	1994-12-13
5372562	Bicycle simulator with collapsible configuration	—	1994-12-13