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Concentrator-integrated screw press
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Patent number 8,881,648
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Issue date Nov 11, 2014
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ISHIGAKI Company Limited
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Manabu Yamashita
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Sludge thickening method
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Patent number 7,906,029
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Issue date Mar 15, 2011
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ISHIGAKI Company Limited
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Kenzou Sugaya
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Sludge thickening device
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Patent number 7,828,961
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Issue date Nov 9, 2010
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ISHIGAKI Company Limited
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Kenzou Sugaya
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Continuous squeeze-dewatering device
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Patent number 6,461,507
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Issue date Oct 8, 2002
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ISHIGAKI Company Limited
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Eiichi Ishigaki
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C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE