JB

Jochum Bierma

Overall (All Time): #723,238 of 4,157,543Top 20%
7
Patents All Time

Issued Patents All Time

Showing 1–7 of 7 patents

Patent #TitleCo-InventorsDate
10167068 Apparatus for rowing in the direction the rower is facing 2019-01-01
8356565 Tensioning device for a carrying net 2013-01-22
8096258 Collapsible catamaran 2012-01-17
7080842 Device for climbing stairs for a wheelchair 2006-07-25
6935447 Stair-climbing hand truck 2005-08-30
6616174 Sack trolley 2003-09-09
6386552 Two-wheel hand truck 2002-05-14