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Underground Systems
Rank (2017):
#18930
of 29,974
Top 65%
3 inventors
1
Patents 2017
Top Inventors at Underground Systems
2017
Showing 1–3 of 3 inventors
Rank
Name
Patents
1
Chunchuan Xu
1
1
David W. Purnhagen
1
1
Paul A. Alex
1