16 Utility Patents
#17 in Oxford, MI
#4,424 in Michigan
#114,356 in US
#227,887 in the World
Forward Citations = 1,339
Company Filing History:

Harnischfeger Technologies, Inc.
4. 1 out of 88
Joy Global Surface Mining Inc
5. 1 out of 174

where one patent can have more than one assignee
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