DH

Donald E. Hultberg

📍 Los Angeles, CA: #2,982 of 12,377 inventorsTop 25%
🗺 California: #124,610 of 386,348 inventorsTop 35%
Overall (All Time): #1,210,169 of 4,157,543Top 30%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
8979286 Spherical mechanical linkage and multi-axis trackers 2015-03-17
8770768 Spherical mechanical linkage and multi-axis trackers 2014-07-08
8540382 Spherical mechanical linkage and multi-axis trackers 2013-09-24
4368962 Solar tracking apparatus and system 1983-01-18