JS

John F. Siebenand

SP Sperry: 1 patents #355 of 841Top 45%
Overall (All Time): #4,023,993 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4550425 Speech sampling and companding device David P. Andersen, Raymond C. Hedin 1985-10-29