CA Patent: CA-4,828
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| Clamping attachment for vises
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Patent Dates:
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| Granted: |
Jun. 09, 1875 |
CIPO Data
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Carl Matthews
"Vintage Machinery" entry for Ezra Caswell
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Description: |
| The drawings and specification for this patent are not available online from the CPIO; the image shown is taken from the August 1875 issue of "The Canadian Patent Office Record". The Espacenet website does have the patent drawings and specification; the specification describes the inventor as a "Carriage Maker".
This patent is the Canadian equivalent to U.S. patent 170,344. |
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