19 Utility Patents
#9 in Topsfield, MA
#4,824 in Massachusetts
#91,581 in US
#180,830 in the World
Forward Citations = 197
Company Filing History:
Porter Sewing Machines, Inc.
Other
Porter International
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#9 in Topsfield, MA
#4,824 in Massachusetts
#91,581 in US
#180,830 in the World
Company Filing History:
Get your Inventor Badge Today