US Patent: 169,812
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Wrench
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Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Applied: |
Aug. 30, 1875 |
Granted: |
Nov. 09, 1875 |
Patent Pictures:
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Robert Jack Pat. November 9, 1875 |
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Description: |
Spring pawls and teeth allow the head to be adjusted in relation to the handle, including a limited range of ratchet action. |
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