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Modular helmet-mask assembly
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Patent number 7,934,497
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Issue date May 3, 2011
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The United States of America as represented by the Secretary of the Army
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Corey M. Grove
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A42 - HEADWEAR
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Advanced chemical/biological crew mask
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Patent number 7,007,690
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Issue date Mar 7, 2006
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The United States of America as represented by the Secretary of the Army
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Corey M. Grove
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A62 - LIFE-SAVING FIRE-FIGHTING
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Chemical/biological helmet
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Patent number 6,826,783
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Issue date Dec 7, 2004
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The United States of America as represented by the Secretary of the Army
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Corey M. Grove
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A62 - LIFE-SAVING FIRE-FIGHTING
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Non-uniform mask lens
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Patent number 6,412,945
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Issue date Jul 2, 2002
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The United States of America as represented by the Secretary of the Army
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Corey M. Grove
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G02 - OPTICS
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Advanced chemical-biological mask
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Patent number 6,176,239
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Issue date Jan 23, 2001
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The United States of America as represented by the Secretary of the Army
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Corey M. Grove
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A62 - LIFE-SAVING FIRE-FIGHTING