US Patent: 172,180
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| Improvement in Plow-Clevis
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Patentee:
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| John Schofield (exact or similar names) - Moline, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 06, 1875 |
| Granted: |
Jan. 11, 1876 |
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Patent Pictures:
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John Schofield Pat. January 11, 1876 |
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Stan Schulz
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Description: |
| The wrench-headed pin in this patent is specifically mentioned in the text. |
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