36 Utility and 3 Design Patents
#3 in Hagerstown, MD
#352 in Maryland
#34,942 in US
#66,686 in the World
rank by utility patentsForward Citations = 203
Company Filing History:
Pangborn Corporation

Other
4. 4 out of 164
The Carborundum Company
5. 2 out of 457

where one patent can have more than one assignee
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