AK

Ahti Kemppi

Google: 2 patents #10,498 of 22,993Top 50%
Overall (All Time): #2,310,467 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5128221 Storage battery Toivo Karn/a, Jukka-Pekka Nieminen, Asko Maisti, Esko Savolainen 1992-07-07
4973533 Gas vault structure for a storage battery Jukka-Pekka Nieminen, Asko Maisti, Toivo Karna, Esko Savolainen, Niilo Jaasko 1990-11-27