DH

David Haythornthwaite

SH Shedrain: 2 patents #1 of 1Top 100%
📍 Xiguoshan, CN: #3 of 15 inventorsTop 20%
Overall (2024): #174,277 of 561,600Top 35%
2
Patents 2024

Issued Patents 2024

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
11992100 Umbrella having anti-inversion mechanism 2024-05-28
11903465 Umbrella having anti-inversion mechanism 2024-02-20