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Beatrice R. Mason

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

Pittsburgh, PA: #4,559 of 7,570 inventorsTop 65%

Pennsylvania: #43,221 of 74,527 inventorsTop 60%

Overall (All Time): #4,045,889 of 4,157,543Top 100%

1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
4488547	Face mask	—	1984-12-18