EP

Erwin W. Parr

PM Parr Manufacturing: 1 patents #1 of 2Top 50%
📍 Des Moines, IA: #6 of 24 inventorsTop 25%
🗺 Iowa: #47 of 364 inventorsTop 15%
Overall (1982): #66,489 of 81,411Top 85%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4310018 Check valve assembly Timothy B. Brandt 1982-01-12