DH

Donald J. Hellwig

📍 Exeter, CA: #1 of 3 inventorsTop 35%
🗺 California: #1,105 of 6,198 inventorsTop 20%
Overall (1982): #68,812 of 81,411Top 85%
1
Patents 1982

Issued Patents 1982

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4345749 Multipurpose splint means for spring leaf assemblies — 1982-08-24