MS

Mark Donald Schaefer

BS Briggs & Stratton: 1 patents #303 of 490Top 65%
Overall (All Time): #3,493,989 of 4,157,543Top 85%
1
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
6810849 Four-stroke internal combustion engine Nicholas Hirsch, Michael Braun, Peter Hotz, Darrell Wiatrowski, Ronald Lee Bartelt +1 more 2004-11-02