US Patent: 450,402
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| Machines for Boring the Valve-Boxes of Cylinders of Steam Engines
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Patentees:
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| George H. Corliss, deceased (estate of) (exact or similar names) - Providence, Providence County, RI |
| Emily A. Corliss, administratrix (exact or similar names) - Providence, Providence County, RI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 21, 1889 |
| Granted: |
Apr. 14, 1891 |
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Joel Havens
"Vintage Machinery" entry for Corliss Steam Engine Works
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Description: |
| Application renewed 06 Nov., 1890. |
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