Invention Grant
- Patent Title: Mail-box indicator.
- Patent Title (中): 邮箱指示器
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Application No.: US1910595965Application Date: 1910-12-06
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Publication No.: US1069816APublication Date: 1913-08-12
- Inventor: SARGENT SUMNER B
- Applicant: GRACE E SARGENT , SARGENT SUMNER B
- Assignee: Grace E Sargent,Sumner B Sargent
- Current Assignee: Grace E Sargent,Sumner B Sargent
- Priority: US1910595965 1910-12-06
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