HK

Hans J. Keller

EI Eltec Instruments: 1 patents #1 of 2Top 50%
📍 Neuhausen, CH: #4 of 11 inventorsTop 40%
Overall (1989): #108,398 of 140,708Top 80%
1
Patents 1989

Issued Patents 1989

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4868390 Pyroelectric sensor with high sensitivity Fredrick Villers 1989-09-19