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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