US Patent: 181,331
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Improvement in Dividers
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Patentee:
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Adolphe Gruber (exact or similar names) - Boston, MA |
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Patent Dates:
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Applied: |
Apr. 24, 1876 |
Granted: |
Aug. 22, 1876 |
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Ralph Brendler
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Description: |
This divider features a reversible point, one side of which is a drafting pen, and the other a pencil holder. The primary patent claims are for a small nib in the arm that allows accurate alignment of the reversible arm. |
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