RR

Robert T. Ritchie

IBM: 3 patents #26,272 of 70,183Top 40%
Overall (All Time): #1,247,549 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7530202 Clamp for a guy guard John Robert Davies 2009-05-12
4990967 Copying method and apparatus Donald F. Colglazier, James H. Hubbard, Michael Lee Morris 1991-02-05
4266231 Ink jet with retractable electrode and secondary ink catcher Gary A. Drago, Arthur L. Mix, Jr. 1981-05-05
4202542 Apparatus for handling flexible sheet material of different sizes Gerald B. Lammers 1980-05-13