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John A. Schaffer

PL Plantronics: 1 patents #20 of 61Top 35%
Overall (2020): #407,425 of 565,922Top 75%
1
Patents 2020

Issued Patents 2020

Patent #TitleCo-InventorsDate
10587951 Equipment including down-firing speaker Jacob T. Meyberg Guzman, John S. Graham 2020-03-10