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Breakaway roll-up door
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Patent number 5,368,084
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Issue date Nov 29, 1994
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ASI Technologies, Inc.
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Clement F. Hying
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Breakaway roll-up door
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Patent number 5,299,617
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Issue date Apr 5, 1994
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ASI Technologies, Inc.
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Clement F. Hying
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS
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Breakaway roll-up door
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Patent number 5,141,044
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Issue date Aug 25, 1992
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ASI Technologies, Inc.
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Clement Hying
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E06 - DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL LADDERS