NK

Norbert A. Keller

📍 Hanerau-Hademarschen, DE: #71 of 129 inventorsTop 60%
Overall (All Time): #4,090,893 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4271669 Reciprocating-piston engine, especially hot-gas engine or compressor Arnulf A. Keller 1981-06-09