Invention Grant
- Patent Title: Diffusion pump
- Patent Title (中): 扩散泵
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Application No.: US47413443Application Date: 1943-01-30
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Publication No.: US2386298APublication Date: 1945-10-09
- Inventor: DOWNING JAMES R O , HUMES WILLIAM B
- Applicant: NAT RES CORP
- Assignee: NAT RES CORP
- Current Assignee: NAT RES CORP
- Priority: US47413443 1943-01-30
- Main IPC: F04F9/00
- IPC: F04F9/00
Information query
