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2028045
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Patent number 2,028,045
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Issue date Jan 14, 1936
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F27 - FURNACES KILNS OVENS RETORTS
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2028038
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Patent number 2,028,038
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Issue date Jan 14, 1936
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F27 - FURNACES KILNS OVENS RETORTS
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2019102
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Patent number 2,019,102
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Issue date Oct 29, 1935
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F27 - FURNACES KILNS OVENS RETORTS
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1984032
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Patent number 1,984,032
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Issue date Dec 11, 1934
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F27 - FURNACES KILNS OVENS RETORTS
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1936840
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Patent number 1,936,840
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Issue date Nov 28, 1933
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F27 - FURNACES KILNS OVENS RETORTS
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1641651
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Patent number 1,641,651
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Issue date Sep 6, 1927
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F27 - FURNACES KILNS OVENS RETORTS
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1597737
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Patent number 1,597,737
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Issue date Aug 31, 1926
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F27 - FURNACES KILNS OVENS RETORTS
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1560393
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Patent number 1,560,393
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F27 - FURNACES KILNS OVENS RETORTS
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1531407
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Patent number 1,531,407
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F27 - FURNACES KILNS OVENS RETORTS
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1470394
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Patent number 1,470,394
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F27 - FURNACES KILNS OVENS RETORTS
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1456837
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Patent number 1,456,837
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F27 - FURNACES KILNS OVENS RETORTS
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1430397
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Patent number 1,430,397
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F27 - FURNACES KILNS OVENS RETORTS
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1411652
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Patent number 1,411,652
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Issue date Apr 4, 1922
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F27 - FURNACES KILNS OVENS RETORTS