Invention Grant
- Patent Title: Electric signal-bell.
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Application No.: US1906326644Application Date: 1906-07-18
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Publication No.: US865771APublication Date: 1907-09-10
- Inventor: EDEN HAROLD W
- Applicant: P R MFG COMPANY
- Assignee: P R Mfg Company
- Current Assignee: P R Mfg Company
- Priority: US1906326644 1906-07-18
Information query
