Invention Grant
- Patent Title: Plural pressure pump control for hydraulic presses
- Patent Title (中): 液压机多重压力泵控制
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Application No.: US55077731Application Date: 1931-07-14
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Publication No.: US1870501APublication Date: 1932-08-09
- Inventor: WALTER ERNST
- Applicant: HYDRAULIC PRESS MFG CO
- Assignee: Hydraulic Press Mfg Co
- Current Assignee: Hydraulic Press Mfg Co
- Priority: US55077731 1931-07-14
- Main IPC: F04B49/12
- IPC: F04B49/12
Information query
