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Certificate of Patent
Patent No.10-1253040
Certificate of Patent
Patent No.10-1243888
Certificate of Patent
Patent No.10-1195451
Certificate of Patent
Patent No.10-1161056
Certificate of Patent
Patent No.10-11147965
Certificate of Patent
Patent No.10-1140589
Certificate of Patent
Patent No.10-1110130
Certificate of Patent
Patent No.10-1116191
Certificate of Patent
Patent No.10-1110128
Certificate of Patent
Patent No.30-0706522
Certificate of Patent
Patent No.30-0706523
Certificate of Patent
Patent No.30-0706524
Certificate of Patent
Patent No.30-0706526