KNOWLEDGE ASSET
219 US4774980A Piloted wellhead flow control valve 先导式井口流量控制阀
Professional source metadata, version and usage boundary.
Bibliographic metadata
| File | 219__US4774980A_Piloted_wellhead_flow_control_valve_先导式井口流量控制阀.pdf |
|---|---|
| Type / category | reference_pdf / references |
| Organization | — |
| Authors | — |
| Language | — |
| Rights / access | unknown / internal |
Version
Version not identified · active · current
Professional identifiers
Identifier pending review.