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Companies
Inventors
WL
Wayne D. Lentz
SL
Shell Canada Limited
: 1 patents #3 of 9
Top 35%
SP
Shell Western E & P
: 1 patents #10 of 35
Top 30%
Overall (All Time):
#3,849,102
of 4,157,543
Top 95%
1
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Profile Widget
Patent #
Title
Co-Inventors
Date
5108272
Sucker rod pump
James R. Brewer
1992-04-28
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