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Descent controller
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Patent number 5,131,491
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Issue date Jul 21, 1992
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Frost Engineering Development Corp.
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Horace M. Varner
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A62 - LIFE-SAVING FIRE-FIGHTING
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Egress and evacuation harness
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Patent number 5,070,962
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Issue date Dec 10, 1991
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Frost Engineering Development Corporation
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Horace M. Varner
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A62 - LIFE-SAVING FIRE-FIGHTING
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Descent controller
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Patent number 5,038,888
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Issue date Aug 13, 1991
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Frost Engineering Development Corp.
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Horace M. Varner
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A62 - LIFE-SAVING FIRE-FIGHTING
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Personnel lowering device
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Patent number 4,938,435
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Issue date Jul 3, 1990
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Frost Engineering Development Corporation
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Horace M. Varner
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B64 - AIRCRAFT AVIATION COSMONAUTICS
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