8 Utility Patents
#142 in Buffalo Grove, IL
#9,670 in Illinois
#254,516 in US
#521,303 in the World
Forward Citations = 88
Company Filing History:
Hopkins Manufacturing Corporation
Irwin-industrial Tool Company

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#142 in Buffalo Grove, IL
#9,670 in Illinois
#254,516 in US
#521,303 in the World
Company Filing History:

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