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Pressurized radon stripper
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Patent number 5,980,613
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Issue date Nov 9, 1999
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HDR Engineering, Inc.
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Harold Steven Reiber
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Cyclonic de-gasser
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Patent number 5,755,965
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Issue date May 26, 1998
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HDR Engineering, Inc.
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Harold Steven Reiber
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B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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Gasket
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Patent number D362902
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Issue date Oct 3, 1995
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HDR Engineering, Inc.
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Harold S. Reiber
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D23 - Environmental heating and cooling