WS

William A. Spring

Illinois Tool Works: 4 patents #925 of 4,258Top 25%
Overall (All Time): #1,271,937 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6364972 Method for selectively hardening a carbon steel screw Mark D. Bauer, Michael Starozhitsky, S. Riaz Hasan 2002-04-02
6109851 Screws having selected heat treatment and hardening Mark D. Bauer, Michael Starozhitsky, S. Riaz Hasan 2000-08-29
4652971 Printed circuit board fastener Francis C. Peterson, William G. Rodseth 1987-03-24
4523883 Printed circuit board fastener Francis C. Peterson, William G. Rodseth 1985-06-18