US Patent: 905,898
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Tool Holder
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Patentees:
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Frederick E. E. Marble (exact or similar names) - Worcester, Worcester County, MA |
Carl A. Hammar (exact or similar names) - Worcester, Worcester County, MA |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Applied: |
Jun. 27, 1907 |
Granted: |
Dec. 08, 1908 |
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Joel Havens
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