David A. Allen

📍 Grandville, MI: #4 of 15 inventorsTop 30%

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

Overall (1997): #164,915 of 185,788Top 90%

Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
D378414	Combined pulse rate measurement and display device	Chris Valentine, Warren R. Stevens	1997-03-11