Invention Grant
- Patent Title: Chemical proportioner
- Patent Title (中): 化学配比剂
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Application No.: US23564538Application Date: 1938-10-18
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Publication No.: US2221273APublication Date: 1940-11-12
- Inventor: STRASBURGER CHARLES M
- Applicant: STRASBURGER CHARLES M
- Assignee: Charles M Strasburger
- Current Assignee: Charles M Strasburger
- Priority: US23564538 1938-10-18
- Main IPC: C02F1/68
- IPC: C02F1/68
Information query
