Invention Grant
- Patent Title: Frost-preventing apparatus.
- Patent Title (中): 防冻装置。
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Application No.: US1910590146Application Date: 1910-11-01
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Publication No.: US994412APublication Date: 1911-06-06
- Inventor: KRONE FREDERICK W JR
- Applicant: KRONE FREDERICK W JR
- Assignee: Frederick W Krone Jr
- Current Assignee: Frederick W Krone Jr
- Priority: US1910590146 1910-11-01
Information query
