US Patent: 869,697
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Micrometer Screw Gage
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Patentees:
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Oskar Eilhauer (exact or similar names) - Neustadt, Saxe-Weimar-Eisenach, Germany |
Paul Rückert (exact or similar names) - Gera, , Reuss, Germany |
Manufacturer: |
Not known to have been produced |
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Patent Dates:
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Applied: |
Feb. 14, 1907 |
Granted: |
Oct. 29, 1907 |
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Joel Havens
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