US Patent: 598,203
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| Lock and Wrench
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Patentee:
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| John Johnson (exact or similar names) - Hartford, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 17, 1897 |
| Granted: |
Feb. 01, 1898 |
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Patent Pictures:
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John Johnson patent February 1, 1898 |
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Stan Schulz
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Description: |
| Intended as a cyclist's tool; the lock feature is a screw coordinated with holes in the shank of the movable jaw, and requiring a key to turn it. The screw is guarded by a surrounding "carrier." |
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