Water-heating system.

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US895638A Water-heating system. 失效

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Patent Title: Water-heating system.
Application No.: US1907373405

Application Date: 1907-05-13
Publication No.: US895638A

Publication Date: 1908-08-11
Inventor: HILL HARRY M
Applicant: HILL ELECTRICAL MFG COMPANY
Assignee: Hill Electrical Mfg Company
Current Assignee: Hill Electrical Mfg Company
Priority: US1907373405 1907-05-13

Water-heating system.

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