US Patent: 120,405
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| Improvement in panel-raising machines
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Patentee:
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| Dwight F. Walker (exact or similar names) - Minneapolis, MN |
| USPTO Classifications: |
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144/114.1, 144/135.2, 144/198.1, 144/219, 144/224, 144/225, 144/243, 144/251.1, 144/251.2, 144/278.1, 144/85
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Patent Dates:
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| Granted: |
Oct. 31, 1871 |
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Patent Pictures:
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1 | 2
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Jeff Joslin
Vintage Machinery entry for Walker Brothers
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Description: |
| This machine was written up in the 1871-10-28 issue of "Scientific American". |
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