US Patent: RE9,221
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| Mortising-machine
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Patentee:
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| Edward H. N. Clarkson (exact or similar names) - Baltimore, MD |
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Patent Dates:
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| Applied: |
Apr. 20, 1880 |
| Granted: |
Jun. 01, 1880 |
| Reissue Information: |
| Reissue of 216,722 (Jun. 24, 1879) |
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Jeff Joslin
"Vintage Machinery" entry for Joseph Clarkson & Son
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Description: |
| This patented mortiser made the mortise required for the Kesler & Clarkson sash pulley that was the subject of patent RE8,586. |
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