DS

David A. Samdahl

WE Wilbrecht Electronics: 1 patents #4 of 7Top 60%
Overall (All Time): #3,920,487 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
4803458 Control switch and potentiometer for hearing aids and the like John A. Trine, Daryle Petersen 1989-02-07