John H. Krebs

AT AT&T: 1 patents #10,626 of 18,772Top 60%

📍 Pittsburgh, PA: #4,559 of 7,570 inventorsTop 65%

🗺 Pennsylvania: #43,221 of 74,527 inventorsTop 60%

Overall (All Time): #3,672,858 of 4,157,543Top 90%

Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
6009161	Automated ringing of an operator for directory assistance calls	Bradley Babbitt, Mary K. Kubli	1999-12-28