DH

Danforth Holley

📍 Grosse Pointe Shores, MI: #24 of 45 inventorsTop 55%
🗺 Michigan: #35,034 of 86,293 inventorsTop 45%
Overall (All Time): #2,370,776 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4287878 Portable solar heater structure — 1981-09-08
4271820 Solar heat structure — 1981-06-09