DB

David L. Brook

Overall (All Time): #2,372,440 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4224573 Electric circuit device and pendulum unit incorporating such devices 1980-09-23
4180916 Gyroscopic instruments 1980-01-01