DH

Diane E. Helmholdt

📍 Caledonia, MI: #64 of 147 inventorsTop 45%
🗺 Michigan: #35,034 of 86,293 inventorsTop 45%
Overall (All Time): #2,336,650 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4746021 Window shelf assembly Charles D. Helmholdt 1988-05-24
D295478 Reconfigurable shelf unit Charles D. Helmholdt 1988-05-03