TS

Tadashi Sawafuji

Overall (All Time): #1,306,902 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
4597099 Piezoelectric transducer — 1986-06-24
4544805 Plane speaker — 1985-10-01
4276449 Speaker or microphone having corrugated diaphragm with conductors thereon — 1981-06-30
4228327 Electromagnetic type acoustic transducers — 1980-10-14