William E. Spengler

DL Dana Limited: 1 patents #21 of 99Top 25%

📍 Toledo, OH: #26 of 103 inventorsTop 30%

🗺 Ohio: #1,649 of 5,836 inventorsTop 30%

Overall (2003): #91,208 of 273,478Top 35%

Patents 2003

Issued Patents 2003

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
6655697	Piston oil ring having land flanked by concave sidewalls	Stephane Heraud	2003-12-02