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Roberta A. Calhoun

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): #3,302,709 of 4,157,543Top 80%

1 Patents All Time

Issued Patents All Time

Showing 1–1 of 1 patents

Patent #	Title	Co-Inventors	Date
7796771	Bone conduction hearing aid fastening device	Jon Hummer	2010-09-14