Angle grinder Robert Bosch
US Patent References: D548034: Portable electric grinder: August, 2007: Hayakawa et al. D8/62: D544325: Angle grinder: June, 2007: Wright: D8/62: D545156: Grinder power tool: June, 2007: Waldron: D8/62: FIG. 1 is a top perspective view of an angle grinder