US Patent: 379,445
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| Wrench
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Patentee:
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| Mathew E. Campfield (exact or similar names) - Pittsburgh, PA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Mar. 13, 1888 |
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Patent Pictures:
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M. E. Campfield patent March 13, 1888 |
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Stan Schulz
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Description: |
| Sliding jaw pipe wrench. Preliminary image taken from "Wrenches and Patents 1887-1898" by Don Shockley -- based on review of Patent Gazettes.
Patent is listed as "Withdrawn" in U.S. Patent Office online database.
The drawing looks similar to Campfield's April 10, 1888 patent (no. 380,859). |
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