DL

Di-Jen Leu

AL American Telephone And Telegraph Company, At&T Bell Laboratories: 1 patents #330 of 1,086Top 35%
📍 Bartlett, IL: #360 of 601 inventorsTop 60%
🗺 Illinois: #48,934 of 84,256 inventorsTop 60%
Overall (All Time): #3,947,310 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4727577 Method of and apparatus for recording information on the accumulated usage of a trunk Alan E. Frey 1988-02-23