MS

Michael G. M. Steeman

SB Sonion Nederland B.V.: 2 patents #45 of 106Top 45%
📍 Castricum, NL: #15 of 41 inventorsTop 40%
Overall (All Time): #2,162,220 of 4,157,543Top 55%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
7286680 Cylindrical microphone having an electret assembly in the end cover Hendrik Dolleman, Paul Christiaan van Hal, Adrianus Maria Lafort, Jan Hijman, Dion Ivo de Roo +2 more 2007-10-23
7062058 Cylindrical microphone having an electret assembly in the end cover Hendrik Dolleman, Paul Christiaan van Hal, Adrianus Maria Lafort, Jan Hijman, Dion Ivo de Roo +2 more 2006-06-13