AF

Alfredo D. Ferrin

SS Sound Advance Systems: 3 patents #3 of 8Top 40%
📍 Irvine, CA: #2,035 of 6,241 inventorsTop 35%
🗺 California: #124,610 of 386,348 inventorsTop 35%
Overall (All Time): #1,262,994 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Showing 1–4 of 4 patents

Patent #TitleCo-InventorsDate
6929091 Planar diaphragm loudspeaker and related methods Alejandro Bertagni, Eduardo Bertagni 2005-08-16
5693917 Planar diaphragm loudspeaker Alejandro Bertagni, Eduardo Bertagni, James Schuessler 1997-12-02
5539835 Planar-type loudspeaker with dual density diaphragm Alejandro Bertagni, Eduardo Bertagni 1996-07-23
5425107 Planar-type loudspeaker with dual density diaphragm Alejandro Bertagni, Eduardo Bertagni 1995-06-13