FM

Frank Markgraf

IBM: 1 patents #44,794 of 70,183Top 65%
📍 Sandhausen, DE: #78 of 141 inventorsTop 60%
Overall (All Time): #3,570,953 of 4,157,543Top 90%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
6181691 Control of a telephone switching system over a digital information network Claus Schottmuller, Clemens Wittinger 2001-01-30