US Patent: 1,027,827
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| Micrometer Gage
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Patentees:
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| Howard E. Eddy (exact or similar names) - Arlington, Baltimore County, MD |
| Ernest B. Crocker (exact or similar names) - Bridgeport, Fairfield County, CT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 11, 1911 |
| Granted: |
May 28, 1912 |
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Joel Havens
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