CA Patent: CA-27,657
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| Pipe Wrench
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Patentee:
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| Daniel R. Porter (exact or similar names) - Chelsea, MA |
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Patent Dates:
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| Applied: |
Sep. 06, 1887 |
| Granted: |
Sep. 22, 1887 |
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Patent Pictures:
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Daniel R. Porter patent Sept. 22, 1887 - edited from Canadian Patents Database |
CIPO Data
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Stan Schulz
27,657 in Canadian Patents Database
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Description: |
| Quick adjust sliding jaw; a known wrench produced commercially with flat springs rather than the coiled springs shown in the patent drawings is marked Pat. Sept. 25, 1888 -- in reference to corresponding U.S. patent 389,899. |
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