5 Utility Patents
#24 in Hagerstown, US
#5,939 in
#397,224 in US
#825,595 in the World
Forward Citations = 27
Company Filing History:

Pangborn Corporation
The Carborundum Company
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#24 in Hagerstown, US
#5,939 in
#397,224 in US
#825,595 in the World
Company Filing History:

Get your Inventor Badge Today