US Patent 7806473 Stackable chair and framework therefor

The specification discloses a stackable chair, and framework therefor, that adapted for vertical stacking in closely conforming relation with at least one other chair of identical configuration, the stackable chair comprising a framework dimensioned for a human being, the framework defining legs, a back rest support, and a seating surface support, and a seating surface and a back rest disposed on the framework. The framework is at least substantially comprised of one or more frame elements each having a thickness of less than 7/16th inches, the one or more frame elements further being configured so that the framework is characterized by a stacking thickness of less than 7/16th inches.