DH

David Haythornthwaite

SH Shedrain: 1 patents #1 of 2Top 50%
📍 Xiguoshan, CN: #1 of 1 inventorsTop 100%
Overall (2018): #445,680 of 503,207Top 90%
1
Patents 2018

Issued Patents 2018

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
10092069 Umbrella having an anti-inversion mechanism ANDREW HAYTHORNTHWAITE 2018-10-09