JM

James O. Mumper

ED E & J Demark: 2 patents #1 of 5Top 20%
📍 Tiffin, OH: #43 of 128 inventorsTop 35%
🗺 Ohio: #30,338 of 73,341 inventorsTop 45%
Overall (All Time): #2,299,911 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5188187 Electrical grounding rod driving bit — 1993-02-23
4557409 Electrical grounding rod driving device J. Edwin Hecock 1985-12-10