ED

Ellen E. Dretzka

AL American Telephone And Telegraph Company, At&T Bell Laboratories: 1 patents #330 of 1,086Top 35%
📍 Naperville, IL: #1,846 of 3,051 inventorsTop 65%
🗺 Illinois: #48,934 of 84,256 inventorsTop 60%
Overall (All Time): #3,984,569 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4703475 Data communication method and apparatus using multiple physical data links Zoe S. Quan, Philip A. Schreiner 1987-10-27