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Evert C. Mattson — 2 Patents

Brule, WI: #1 of 2 inventorsTop 50%

Wisconsin: #17,084 of 40,088 inventorsTop 45%

Overall (All Time): #2,252,900 of 4,157,543Top 55%

2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
5954074	Universal adjustable walking crutch and/or cane	—	1999-09-21
4594652	Digital audio differential drive system	—	1986-06-10