RK

Ralph J. Koerner

3M: 2 patents #5,326 of 11,543Top 50%
Overall (All Time): #659,187 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
7373891 Quilting method and apparatus using frame with motion detector 2008-05-20
7292628 Identification system for monitoring the presence / absence of members of a defined set Steve J. Koerner 2007-11-06
7210417 Stitching method and apparatus employing thread payout detection 2007-05-01
6883446 Quilting method and apparatus 2005-04-26
6611556 Identification system for monitoring the presence/absence of members of a defined set Steve J. Koerner 2003-08-26
5175540 Variometer system for soaring flight 1992-12-29
4945356 Strip material for and a surface mounted inductive loop Martin C. Henderson, William D. Jordan 1990-07-31
4449115 Apparatus for detecting ferromagnetic material 1984-05-15