Invention Grant
- Patent Title: Automatic valve for water-heaters.
- Patent Title (中): 水加热器自动阀。
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Application No.: US1050705DApplication Date:
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Publication No.: US1050705APublication Date: 1913-01-14
- Inventor: SPOTTS JAMES CAMPBELL
- Applicant: CHARLES CARROLL
- Assignee: Charles Carroll
- Current Assignee: Charles Carroll
- Priority: US1050705T null
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