发明名称 Covert saw 'Professional'
摘要 The present invention pertains to an electric-mechanical portably held and operated pipe cutting tool with hidden non-exposed blades that cut a various range and makeup of cylindrical pipe using a duality of synchronized perpetually designed blade motions within a drum shaped compartment which comprises these same blades mounted on a squirrel cage frame of which moves independently and opposite of the blades while sharing the same source of mechanical power.
申请公布号 US2011162210(A1) 申请公布日期 2011.07.07
申请号 US20100924342 申请日期 2010.09.24
申请人 POINDEXTER RICHARD HOLT 发明人 POINDEXTER RICHARD HOLT
分类号 B23D21/04;B26D3/16 主分类号 B23D21/04
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