US Patent: 1,799,739
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| Precision measuring device
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Patentees:
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| Carl G. Schiele (exact or similar names) - Cincinnati, OH |
| John B. Elfring (exact or similar names) - Cincinnati, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 13, 1926 |
| Granted: |
Apr. 07, 1931 |
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Joel Havens
"Vintage Machinery" entry for Cincinnati Grinders, Inc.
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Description: |
| "The principal object of the present invention is the provision of a novel mechanism for accurately determining the correctness of the guide ways on the bed of a milling machine, grinding machine or like machine tool." |
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