JM

James F. Machen

📍 Toledo, OH: #529 of 1,470 inventorsTop 40%
🗺 Ohio: #30,338 of 73,341 inventorsTop 45%
Overall (All Time): #2,266,772 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
D402908 Engraved surveyor's marker Frederick G. VanKoughnet 1998-12-22
4249877 High-speed direct-drive extruder — 1981-02-10