Invention Grant
- Patent Title: Convertible water heating system
- Patent Title (中): 可换水加热系统
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Application No.: US37235053Application Date: 1953-08-04
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Publication No.: US2920608APublication Date: 1960-01-12
- Inventor: JOHN ORBAN
- Applicant: JOHN ORBAN
- Assignee: Orban John
- Current Assignee: Orban John
- Priority: US37235053 1953-08-04
- Main IPC: F22B1/16
- IPC: F22B1/16 ; F22B1/18 ; F24D3/02 ; F24D12/02 ; F28D21/00
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