Douglas J. Bittl

📍 Milwaukee, WI: #1,543 of 2,770 inventorsTop 60%

🗺 Wisconsin: #23,834 of 40,088 inventorsTop 60%

Overall (All Time): #3,847,431 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
5102142	Golf putting training device	—	1992-04-07