Invention Grant
- Patent Title: Dual power sources
- Patent Title (中): 双电源
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Application No.: US75761158Application Date: 1958-08-27
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Publication No.: US3059164APublication Date: 1962-10-16
- Inventor: JOHNSON ARTHUR E
- Applicant: SMITH CORP A O
- Assignee: A O Smith Corp
- Current Assignee: A O Smith Corp
- Priority: US75761158 1958-08-27
- Main IPC: B23K9/10
- IPC: B23K9/10
Information query
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