US Patent 8172316 Stackable chair

In a stackable chair system, a plurality of chairs are provided, each chair having a back, a seat, and first and second armrests all integral with one another in an injection-molded thermal plastic construction. Each first armrest has an integral molded round cup-holder positioned in a region of an outer end of the first armrest. Each second armrest has an integral molded second round cup-holder positioned in a region of an outer end of the second armrest. Each seat portion is contoured downwardly forming a seat depression. Each chair is dimensioned so that the chairs can be stacked on top of one another in nested fashion.