WK

Walter Kammerer

U.S. Philips: 1 patents #4,133 of 8,851Top 50%
Overall (All Time): #4,022,515 of 4,157,543Top 100%
1
Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4545049 Private branch exchange having transmission channels commonly available to all stations Vladimir Spiro 1985-10-01