US Patent: 779,289
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| Tool Holder
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Patentees:
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| Hellmuth Langer (exact or similar names) - Steglitz, Steglitz-Zehlendor Borough, Germany |
| Georg Bock (exact or similar names) - Steglitz, Steglitz-Zehlendor Borough, Germany |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 19, 1902 |
| Granted: |
Jan. 03, 1905 |
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Joel Havens
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