William J. Hannapel

📍 Richland, MI: #36 of 90 inventorsTop 40%

🗺 Michigan: #35,034 of 86,293 inventorsTop 45%

Overall (All Time): #2,090,204 of 4,157,543Top 55%

Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
8173882	Tremolo assembly of stringed instrument	—	2012-05-08
D525238	Pop screen filter assembly	—	2006-07-18