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David M. Chenal

JHJmj Holdings: 2 patents #1 of 1Top 100%

Frederic, WI: #1 of 1 inventorsTop 100%

Wisconsin: #848 of 4,688 inventorsTop 20%

Overall (2023): #164,137 of 537,848Top 35%

2 Patents 2023

Issued Patents 2023

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
11826231	Earpiece-foam sizing apparatus and method	—	2023-11-28
D985753	Earpiece assembly	—	2023-05-09