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Production line of CA abrasive
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Patent number 11,897,165
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Issue date Feb 13, 2024
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Qingdao University of Technology
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Changhe Li
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B28 - WORKING CEMENT, CLAY, OR STONE
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Method for manufacturing a slab
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Patent number 11,260,562
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Issue date Mar 1, 2022
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INNOVATIVE STONE TECHNOLOGIES B.V.
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Erik Schoneveld
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B28 - WORKING CEMENT, CLAY, OR STONE
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Feeding device for a press
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Patent number 11,167,445
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Issue date Nov 9, 2021
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SYSTEM CERAMICS S.P.A.
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Franco Stefani
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B28 - WORKING CEMENT, CLAY, OR STONE
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Pressing device
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Patent number 10,478,995
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Issue date Nov 19, 2019
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System S.p.A.
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Franco Stefani
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B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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3436791
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Patent number 3,436,791
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Issue date Apr 8, 1969
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B28 - WORKING CEMENT, CLAY, OR STONE
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3353236
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Patent number 3,353,236
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Issue date Nov 21, 1967
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B28 - WORKING CEMENT, CLAY, OR STONE
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3222434
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Patent number 3,222,434
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Issue date Dec 7, 1965
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B28 - WORKING CEMENT, CLAY, OR STONE
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3103254
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Patent number 3,103,254
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Issue date Sep 10, 1963
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B28 - WORKING CEMENT, CLAY, OR STONE
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2670515
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Patent number 2,670,515
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Issue date Mar 2, 1954
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B28 - WORKING CEMENT, CLAY, OR STONE
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2575092
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Patent number 2,575,092
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Issue date Nov 13, 1951
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B28 - WORKING CEMENT, CLAY, OR STONE
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2541109
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Patent number 2,541,109
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Issue date Feb 13, 1951
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B28 - WORKING CEMENT, CLAY, OR STONE
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2361311
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Patent number 2,361,311
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Issue date Oct 24, 1944
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B28 - WORKING CEMENT, CLAY, OR STONE
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2129162
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Patent number 2,129,162
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Issue date Sep 6, 1938
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B28 - WORKING CEMENT, CLAY, OR STONE
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1461940
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Patent number 1,461,940
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Issue date Jul 17, 1923
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B28 - WORKING CEMENT, CLAY, OR STONE
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1332677
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Patent number 1,332,677
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Issue date Mar 2, 1920
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B28 - WORKING CEMENT, CLAY, OR STONE