RV

Roberto Viazzi

RS Rft S.P.A.: 1 patents #4 of 5Top 80%
Overall (All Time): #3,870,175 of 4,157,543Top 95%
1
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Issued Patents All Time

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
4993379 Sliding stem seal, particularly for valve stems — 1991-02-19