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Inventor
WEIR JAMES W
US
4 patents
⚠️ This page may combine multiple inventors who share the name “WEIR JAMES W”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NAT OILWELL VARCO LP
2 patents
US10337638B2
Jul 2, 2019
Slow-shift SPM valve
NAT OILWELL VARCO LP
7 citations
80
US12247669B2
Mar 11, 2025
Valve assembly for well systems
NAT OILWELL VARCO LP
0 citations
56
NAT OILWELL VAREO L P
2 patents
US11353124B2
Jun 7, 2022
Valve assembly for well systems
NAT OILWELL VAREO L P
3 citations
66
US11536390B2
Dec 27, 2022
Slow-shift SPM valve
NAT OILWELL VAREO L P
0 citations
59