David S. DeWinter — 4 Patents at Uniontools

David S. DeWinter has been granted 4 US patents while listed as an inventor at Uniontools. The first was granted in 2004 and the most recent in January 2012. David S. DeWinter ranks #1,080,739 of 4,157,543 US inventors in our database (top 26.0%). Patent records list David S. DeWinter in Luther, MI, US.

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #	Title	Co-Inventors	Date
8100447	Shovel with multiple blade faces	—	2012-01-24
D517876	Bow rake	Brian J. Conaway, Terry M. Birchler	2006-03-28
6959454	Structure with extendable leaves	—	2005-11-01
6722115	Rake with extendable material-moving implement	—	2004-04-20

David S. DeWinter — 4 Patents

Issued Patents All Time

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