AB

Alfred Boettcher

UN Unknown: 1 patents #29,356 of 83,584Top 40%
📍 Aachen, DE: #1,459 of 2,680 inventorsTop 55%
Overall (All Time): #4,057,857 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4404958 Solar energy collector, and water heater and heating device with a heat pump containing the said collector 1983-09-20