US Patent: 1,977,311
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| Rate Change Device
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Patentees:
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| Edward J. Kearney (exact or similar names) - Wauwatosa, Milwaukee County, WI |
| Robert S. Condon (exact or similar names) - Rochester, Monroe County, NY |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 21, 1927 |
| Granted: |
Oct. 16, 1934 |
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Joel Havens
"Vintage Machinery" entry for Kearney & Trecker Co.
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Description: |
| Original application on 21 Mar 1927. Divided and this application on 18 Mar 1931. |
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