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Process for calcining limestone
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Patent number 4,854,861
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Issue date Aug 8, 1989
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Deutsche Filterbau GmbH
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Winfried G. Hartweck
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Method of producing lime in a rotary kiln
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Patent number 4,391,671
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Issue date Jul 5, 1983
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Pulp and Paper Research Institute of Canada
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Mahmoud K. Azarniouch
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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Process for calcining limestone
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Patent number 4,031,183
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Issue date Jun 21, 1977
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Terence Arthur Rourke
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3617583
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Patent number 3,617,583
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Issue date Nov 2, 1971
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3544093
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Patent number 3,544,093
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Issue date Dec 1, 1970
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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3305611
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Patent number 3,305,611
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Issue date Feb 21, 1967
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES
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1627215
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Patent number 1,627,215
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Issue date May 3, 1927
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C04 - CEMENTS CONCRETE ARTIFICIAL STONE CERAMICS REFRACTORIES