13 Utility and 2 Design Patents
#1 in Countryside, IL
#5,470 in Illinois
#147,613 in US
#296,785 in the World
rank by utility patentsForward Citations = 119
Company Filing History:
Portec Rail Products, Inc.

Holland LP
4. 1 out of 97

5. 1 out of 1
Portec, Inc., Shipping Systems Div.
where one patent can have more than one assignee
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