7 Utility and 2 Design Patents
#1,043 in Pittsburgh, PA
#10,759 in Pennsylvania
#290,700 in US
#597,499 in the World
rank by utility patentsForward Citations = 211
Company Filing History:


4. 1 out of 318

5. 1 out of 242
Mine Safety Appliances Company
where one patent can have more than one assignee
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