PJ

Philip E. Rollhaus, Jr.

QU Quixote: 2 patents #1 of 15Top 7%
📍 Chicago, IL: #3,897 of 13,327 inventorsTop 30%
🗺 Illinois: #26,653 of 84,256 inventorsTop 35%
Overall (All Time): #1,646,414 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5495527 Telephone privacy device Chris DelPlato, James Ryan, Eric E. Knutsen 1996-02-27
4694280 Keyboard entry system Yukio Endo 1987-09-15
4638306 Keyboard entry system Yukio Endo 1987-01-20