DH

David Haythornthwaite

SH Shedrain: 1 patents #1 of 1Top 100%
📍 Xiguoshan, CN: #5 of 9 inventorsTop 60%
Overall (2025): #412,983 of 469,880Top 90%
1
Patents 2025

Issued Patents 2025

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
12336607 Umbrella having anti-inversion mechanism — 2025-06-24