Douglas C. Alcumbrack

📍 Rockford, MI: #186 of 287 inventorsTop 65%

🗺 Michigan: #49,615 of 86,293 inventorsTop 60%

Overall (All Time): #3,717,959 of 4,157,543Top 90%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

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