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John A. Schaffer

PL Plantronics: 1 patents #228 of 433Top 55%
Overall (All Time): #2,779,849 of 4,157,543Top 70%
1
Patents All Time

Issued Patents All Time

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