Invention Grant
- Patent Title: Method of treating a zinc bearing ore material
- Patent Title (中): 处理含锌矿石材料的方法
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Application No.: US75147534Application Date: 1934-11-05
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Publication No.: US2039331APublication Date: 1936-05-05
- Inventor: MITCHELL THOMAS A
- Applicant: HUGHES MITCHELL PROCESSES INC
- Assignee: Hughes Mitchell Processes Inc
- Current Assignee: Hughes Mitchell Processes Inc
- Priority: US75147534 1934-11-05
- Main IPC: C01G9/00
- IPC: C01G9/00
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