Cyrenus M. Rubald

AT American Telephone And Telegraph: 1 patents #132 of 699Top 20%

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): #3,895,472 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4899375	More efficient call handling for operator assistance calls	Thomas Michael Bauer, Richard W. Hemmeter, Robert Petrelli, Richard J. Piereth	1990-02-06