Pressurized seat check valve
US-2018363416-A1 · Dec 20, 2018 · US
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He Zhi Yong patents in 2018
He Zhi Yong was listed as an assignee on 1 patent publication in 2018.
| Metric | Value |
|---|---|
| Company | He Zhi Yong |
| Year | 2018 |
| Patents | 1 |
Patents
Representative publications for He Zhi Yong in 2018.
Top CPC classifications
Most common classification codes for He Zhi Yong in 2018.
| CPC | Patents |
|---|---|
| E21B34/08 | 1 |
| F16K15/026 | 1 |
| F16K15/044 | 1 |
| F16K25/005 | 1 |
| F16K25/04 | 1 |
Related pages
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