KW

Klaus Walla

SA Siemens Aktiengesellschaft: 2 patents #6,658 of 22,248Top 30%
Overall (All Time): #2,365,415 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
4315103 Speech-controlled loudspeaker telephone station circuit — 1982-02-09
4304969 Power circuit for loudspeaker telephone — 1981-12-08