KJ

Kalervo A. Jappinen

📍 Helsinki, FI: #2,126 of 3,940 inventorsTop 55%
Overall (All Time): #3,871,630 of 4,157,543Top 95%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4998431 Field usable calibrator for humidity meters Marja-Riitta Hakala, Jouko S. Jalava, Ari Lehto 1991-03-12