US Patent: 2,251,831
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| Refrigerating Apparatus
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Patentee:
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| Irving J. Knudson (exact or similar names) - Kenilworth, Cook County, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Mar. 17, 1939 |
| Granted: |
Aug. 05, 1941 |
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Joel Havens
"Vintage Machinery" entry for Detroit Lubricator Co.
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Description: |
| Original application filed 14 May, 1935, now patent #2,187,038. Divided and this application filed 17 Mar., 1939. |
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