US Patent: 427,325
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Boring-machine
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Patentees:
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Charles H. Irwin (exact or similar names) - Wilmington, OH |
Friederich Mill (exact or similar names) - Wilmington, OH |
John E. Hitch (exact or similar names) - Wilmington, OH |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Applied: |
Dec. 28, 1889 |
Granted: |
May 06, 1890 |
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Jeff Joslin
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