Douglas C. Alcumbrack

📍 Rockford, MI: #3 of 9 inventorsTop 35%

🗺 Michigan: #1,023 of 4,492 inventorsTop 25%

Overall (1997): #48,896 of 185,788Top 30%

Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5638857	Air lockout device	—	1997-06-17