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Donald B. Cerf

Los Angeles, CA: #7,008 of 12,377 inventorsTop 60%

California: #247,236 of 386,348 inventorsTop 65%

Overall (All Time): #4,103,437 of 4,157,543Top 100%

1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4181314	Self draining seal	Perry J. Dreibus	1980-01-01