WH

William C. Holmgren

AS American Grease Stick: 1 patents #6 of 9Top 70%
📍 Muskegon, MI: #199 of 391 inventorsTop 55%
🗺 Michigan: #49,615 of 86,293 inventorsTop 60%
Overall (All Time): #4,101,153 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4302365 Engine degreaser composition Charles E. Hiddema 1981-11-24