US Patent: 478,405
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| Wrench
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Patentees:
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| Hans P. Christensen (exact or similar names) - Marinette, WI |
| Hans Nelson (exact or similar names) - Marinette, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 15, 1892 |
| Granted: |
Jul. 05, 1892 |
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Patent Pictures:
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Hans P. Christensen and Hans Nelson patent Muly 5, 1892 |
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Stan Schulz
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Description: |
| Even reading the specifications, it is hard to envision how this ratchet was supposed to operate. |
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