Cincinnati, Ohio
United States
6
2022-06-16
Patrick Doll from Cincinnati, US has applied for patents for these inventions. The list has both pending applications and granted patents:
REFRESHABLE BRAILLE DEVICE
#2 | 2018-11-15REFRESHABLE BRAILLE DEVICE
#3 | 2015-10-08REFRESHABLE BRAILLE DISPLAY DEVICE
#4 | 2013-01-10Refreshable Braille Display Device
#5 | 2011-05-19Refreshable braille display device
#6 | 2010-06-29Refreshable Braille display device
28181 ⎘