HW

Hans Warntjes

HO Hoya: 1 patents #77 of 218Top 40%
📍 Dronten, NL: #2 of 3 inventorsTop 70%
Overall (2011): #290,291 of 364,097Top 80%
1
Patents 2011

Issued Patents 2011

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
7996997 Spectacle measuring tool Takashi Hatanaka 2011-08-16