Invention Grant
- Patent Title: Window-cleaner.
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Application No.: US1906314312Application Date: 1906-04-28
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Publication No.: US869842APublication Date: 1907-10-29
- Inventor: HILL BENJAMIN A
- Applicant: HILL BENJAMIN A
- Assignee: Benjamin A Hill
- Current Assignee: Benjamin A Hill
- Priority: US1906314312 1906-04-28
Information query
