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ES
Eric David Sieverding
RI
Ritchie Industries
: 1 patents #4 of 11
Top 40%
Overall (All Time):
#2,597,651
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1
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Patent #
Title
Co-Inventors
Date
11716968
Waterer valve system
Tad D. Upah
,
Robert John Amundson
2023-08-08
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