US Patent: 471,078
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| Pipe Wrench
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Patentee:
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| John Landwehr (exact or similar names) - Long Island City, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 21, 1891 |
| Granted: |
Mar. 15, 1892 |
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Patent Pictures:
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John Landwehr patent March 15, 1892 |
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Stan Schulz
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Description: |
| A single insertable bit provides the grip; the spring-loaded hook jaw can be set to one of three pivot points to adjust the size ranges. |
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