HK

Herman E. Knappe

TC The Cherry-Burrell: 2 patents #1 of 12Top 9%
Overall (All Time): #2,360,270 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4483360 Actuator mechanism for double-block and vent valve James W. Scott 1984-11-20
4373545 Double block and vent valve 1983-02-15