US Patent: 503,012
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| Attachment for drilling-machines
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Patentee:
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| John J. Stevens (exact or similar names) - Galt, ON Canada |
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Patent Dates:
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| Applied: |
Nov. 25, 1892 |
| Granted: |
Aug. 08, 1893 |
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Jeff Joslin Vintage Machinery entry for MacGregor, Gourlay Co. Vintage Machinery entry for Stevens, Hamilton & Co.
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Description: |
| See also patent CA-42,774."...a certain new and Improved Attachment by which Small Drills may be Advantageously Used in a Large Drilling-Machine..." |
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