US Patent: 788,547
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| Power Hammer
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Patentees:
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| Ole P. Miklebost (exact or similar names) - Brown Valley, Traverse County, MN |
| Anton G. Anderson (exact or similar names) - Brown Valley, Traverse County, MN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jul. 20, 1904 |
| Granted: |
May 02, 1905 |
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Joel Havens
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