Thomas J. Geers, Jr.

AL American Telephone And Telegraph Company, At&T Bell Laboratories: 1 patents #330 of 1,086Top 35%

📍 Columbus, OH: #2,196 of 3,880 inventorsTop 60%

🗺 Ohio: #42,657 of 73,341 inventorsTop 60%

Overall (All Time): #3,894,676 of 4,157,543Top 95%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4896346	Password controlled switching system	William R. Belfield, William J. Erwin, Roy V. Grubbe, Stephen W. Handy, Robert J. Perdue	1990-01-23