Invention Grant
- Patent Title: Frame for electric bells.
- Patent Title (中): 电池框架。
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Application No.: US1906299518Application Date: 1906-02-05
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Publication No.: US837671APublication Date: 1906-12-04
- Inventor: EDEN HAROLD W
- Applicant: P R MFG COMPANY
- Assignee: P R Mfg Company
- Current Assignee: P R Mfg Company
- Priority: US1906299518 1906-02-05
Information query
