Invention Grant
- Patent Title: Hollow poppet valve
- Patent Title (中): 空心提升阀
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Application No.: US52327244Application Date: 1944-02-21
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Publication No.: US2394150APublication Date: 1946-02-05
- Inventor: COLWELL ARCHIE T
- Applicant: THOMPSON PROD INC
- Assignee: Northrop Grumman Space and Mission Systems Corp
- Current Assignee: Northrop Grumman Space and Mission Systems Corp
- Priority: US52327244 1944-02-21; US42371641 1941-12-20
- Main IPC: F01L3/18
- IPC: F01L3/18
Information query
