US Patent: 1,391,016
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| Micrometer
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Patentees:
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| William T. Slider (exact or similar names) - Indianapolis, IN |
| Harold R. Slider (exact or similar names) - Indianapolis, IN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jan. 05, 1921 |
| Granted: |
Sep. 20, 1921 |
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Joel Havens
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Description: |
| Joseph A. Minturn - patent attorney
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