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Serge A. Tcherepnin

UNUnknown: 1 patents #29,356 of 83,584Top 40%

Los Angeles, CA: #4,824 of 12,377 inventorsTop 40%

California: #185,134 of 386,348 inventorsTop 50%

Overall (All Time): #2,371,029 of 4,157,543Top 60%

2 Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
4306480	Electronic musical instrument	Frank Eventoff	1981-12-22
4276538	Touch switch keyboard apparatus	Franklin N. Eventoff	1981-06-30