PB

Philip Bierhuizen

OT Oak Technology: 1 patents #28 of 64Top 45%
Overall (All Time): #4,102,765 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4307275 Membrane switch construction and method for making same Willis A. Larson, Anthony J. Van Zeeland 1981-12-22