Donald W. Kelbel

BO Borgwarner: 4 patents #274 of 1,600Top 20%

📍 Muncie, IN: #45 of 234 inventorsTop 20%

🗺 Indiana: #8,550 of 33,936 inventorsTop 30%

Overall (All Time): #1,310,210 of 4,157,543Top 35%

Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #	Title	Co-Inventors	Date
4269294	Automatic clutch	—	1981-05-26
4228693	Transmission shift control apparatus	—	1980-10-21
4193316	Transmission shift control mechanism	—	1980-03-18
4185723	Automatic four-wheel drive transfer case	—	1980-01-29