3 Utility Patents
#69 in Bethel Park, PA
#23,125 in Pennsylvania
#604,262 in US
Forward Citations = 7
Company Filing History:

Harbison-walker Refractories Company
Harbison-walker Reeractories Company
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#69 in Bethel Park, PA
#23,125 in Pennsylvania
#604,262 in US
Company Filing History:

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