WD

William H. Donaldson

SM Schaefer Marine: 3 patents #3 of 5Top 60%
📍 Middletown, RI: #29 of 111 inventorsTop 30%
🗺 Rhode Island: #1,858 of 6,211 inventorsTop 30%
Overall (All Time): #1,548,502 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
8091496 Mast track with external headboard car Fred C. Cook 2012-01-10
8091497 Sectionalized mast track Fred C. Cook 2012-01-10
8001916 Mega yacht mast tracking system with articulating sail feeder Fred C. Cook 2011-08-23