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Seat back with shaped internal ribs
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Patent number 6,168,239
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Issue date Jan 2, 2001
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Irwin Seating Company
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John P. Conner
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Seat back with aperture identifiers
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Patent number 6,042,187
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Issue date Mar 28, 2000
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Irwin Seating Company
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John P. Conner
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Seat back with corner indentations
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Patent number 6,033,027
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Issue date Mar 7, 2000
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Irwin Seating Company
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John P. Conner
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Contoured plastic seat back
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Patent number 5,951,110
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Issue date Sep 14, 1999
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Irwin Seating Company
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John P. Conner
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...