US Patent: 1,513,024
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Reamer Head
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Patentees:
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Emil Leonard Baumann (exact or similar names) - Munich-Gladbach, Germany |
Hermann Schumacher (exact or similar names) - Neuss, Germany |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Applied: |
Jun. 24, 1920 |
Granted: |
Oct. 28, 1924 |
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Joel Havens
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