WS

W. Porter Stone

PP Piezo Electric Products: 3 patents #4 of 12Top 35%
📍 Walpole, NH: #5 of 20 inventorsTop 25%
🗺 New Hampshire: #4,150 of 12,181 inventorsTop 35%
Overall (All Time): #1,673,181 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4742189 Visco-elastic delayed actuator Robert E. Carter 1988-05-03
4475823 Self-calibrating thermometer 1984-10-09
4473859 Piezoelectric circuit breaker Henry H. Kolm, Eric A. Kolm 1984-09-25