JF

John Calvin Fields

PE Peavey Electronics: 3 patents #14 of 40Top 35%
Overall (All Time): #1,547,964 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
8610498 Methods and apparatus for variable solid state-to-tube rectification in an amplifier Paul Stevens, Hartley D. Peavey 2013-12-17
7145392 Methods and apparatus for variable harmonic distortion Hartley D. Peavey 2006-12-05
7053714 Methods and apparatus for switching between class A and A/B operation in a power amplifier Hartley D. Peavey 2006-05-30