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Hand/foot powered bicycle
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Patent number 8,403,349
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Issue date Mar 26, 2013
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Ching-Tien Pi
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B62 - LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
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Drainage mop
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Patent number 6,810,549
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Issue date Nov 2, 2004
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Ching-Tien Pi
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Clip type kitchen peeling tool
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Patent number 6,427,332
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Issue date Aug 6, 2002
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Ching-Tien Pi
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...
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Wheeled triple-leg walker
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Patent number 6,003,532
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Issue date Dec 21, 1999
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Ching-Tien Pi
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A61 - MEDICAL OR VETERINARY SCIENCE HYGIENE
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Cushioning device
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Patent number 5,707,108
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Issue date Jan 13, 1998
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Ching-Tien Pi
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A47 - FURNITURE DOMESTIC ARTICLES OR APPLIANCES COFFEE MILLS SPICE MILLS SUCT...