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3092051
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Patent number 3,092,051
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Issue date Jun 4, 1963
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F27 - FURNACES KILNS OVENS RETORTS
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1794705
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Patent number 1,794,705
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Issue date Mar 3, 1931
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F27 - FURNACES KILNS OVENS RETORTS
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1794706
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Patent number 1,794,706
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Issue date Mar 3, 1931
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F27 - FURNACES KILNS OVENS RETORTS
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1541449
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Patent number 1,541,449
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Issue date Jun 9, 1925
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F27 - FURNACES KILNS OVENS RETORTS
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1488468
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Patent number 1,488,468
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Issue date Apr 1, 1924
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F27 - FURNACES KILNS OVENS RETORTS
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1488660
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Patent number 1,488,660
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Issue date Apr 1, 1924
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F27 - FURNACES KILNS OVENS RETORTS
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1477895
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Patent number 1,477,895
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Issue date Dec 18, 1923
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F27 - FURNACES KILNS OVENS RETORTS
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1436923
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Patent number 1,436,923
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Issue date Nov 28, 1922
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F27 - FURNACES KILNS OVENS RETORTS
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1404845
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Patent number 1,404,845
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Issue date Jan 31, 1922
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F27 - FURNACES KILNS OVENS RETORTS