US Patent: 1,421,137
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| Pipe Wrench
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Patentees:
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| Chester L. Anderson (exact or similar names) - Springfield, MA |
| James T. Smith (exact or similar names) - Springfield, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 29, 1921 |
| Granted: |
Jun. 27, 1922 |
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Stan Schulz
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Description: |
| An adjustable alligator wrench. The adjusting means is a swinging yoke which fits into a series of notches in the back of the movable jaw. |
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