Ralph P. Fravel

KH K/S Himpp: 1 patents #15 of 26Top 60%

📍 Woodbury, MN: #1,128 of 1,562 inventorsTop 75%

🗺 Minnesota: #32,449 of 52,454 inventorsTop 65%

Overall (All Time): #3,511,313 of 4,157,543Top 85%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
6563931	Auditory prosthesis for adaptively filtering selected auditory component by user activation and method for doing same	Sigfrid D. Soli	2003-05-13