US Patent: 75,827
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Improvement in Calipers
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Patentee:
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Jearum Atkins (exact or similar names) - Washington, DC |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Granted: |
Mar. 24, 1868 |
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Ralph Brendler
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Description: |
This caliper joint design features a tapered shaft so that the calipers can be tightened in any position without the tightening moving the legs. |
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