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Mixing apparatus
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Patent number 5,492,404
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Issue date Feb 20, 1996
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William H. Smith
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Mixing apparatus and system
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Patent number 5,131,757
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Issue date Jul 21, 1992
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Hazleton Environmental Products Inc.
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William H. Smith
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Mixing apparatus
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Patent number 4,474,477
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Issue date Oct 2, 1984
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Barrett, Haentjens & Co.
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William H. Smith
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL