RD

ROBERT H. DUFFIELD

📍 Coeur d'Alene, ID: #45 of 186 inventorsTop 25%
🗺 Idaho: #2,529 of 8,810 inventorsTop 30%
Overall (All Time): #1,202,126 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
9280229 Touch alphabet and communication system 2016-03-08
8896555 Touch alphabet and communication system 2014-11-25
4744006 Apparatus for expanding the input/output capabilities of a personal computer 1988-05-10
4193520 Device for adding soap to shower water 1980-03-18