HH

Hans Hildebrand

📍 Baar, CH: #51 of 230 inventorsTop 25%
Overall (All Time): #1,259,041 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
7059131 Method and system for exchanging earth energy between earthly bodies and an energy exchanger, especially to produce an electric current 2006-06-13
5937934 Soil heat exchanger 1999-08-17
5738164 Arrangement for effecting an energy exchange between earth soil and an energy exchanger 1998-04-14
5322115 Installation for energy exchange between the ground and an energy exchanger 1994-06-21