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US6754981B1
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Footwear structure with outsole bulges and midsole bladder
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US6092309A
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Heel and sole structure with inwardly projecting bulges
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US5956869A
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Shoe sole construction with mesh liner for mid-sole cavity
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US5794359A
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Sole and heel structure with peripheral fluid filled pockets
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US5701687A
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Thrust producing sole and heel structure with interior and exterior fluid filled pockets
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US5664341A
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Sole and heel structure with premolded bulges and expansible cavities
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US5679439A
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Heel/metatarsal structure having tapered stabilizing bulges
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US5678328A
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Heel and sole structure with opposite cavities
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US5842291A
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Thrust producing multiple channel-multiple chamber shoe and bladder
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US5545463A
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Heel/metatarsal structure having premolded bulges
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CA2141992A1
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Thrust producing shoe sole and heel improved stability
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US5375346A
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Thrust producing shoe sole and heel improved stability
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US4577417A
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Sole-and-heel structure having premolded bulges
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