US Patent: 48,454
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Improvement in Rulers
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Patentee:
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S. L. Simpson (exact or similar names) - New York, NY |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Granted: |
Jun. 27, 1865 |
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Ralph Brendler
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Description: |
This is an improvement on Henry Taylor's earlier patent ( #48,454 - December 20, 1864).
which adds a spring-loaded sliding stop to the compass arm.
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