HH

Hagen Hartwig

SA Siemens Aktiengesellschaft: 3 patents #4,667 of 22,248Top 25%
Overall (All Time): #1,662,168 of 4,157,543Top 40%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
5138286 Method and device for voltage frequency transformation — 1992-08-11
5008564 Method and device for converting voltage to frequency — 1991-04-16
5001360 Method and device for converting voltage to frequency — 1991-03-19