N.H. Rev. Stat. Ann. § 295:3

Every such corporation may admit associates and members, and for just cause remove them; may elect all necessary officers, define their duties and fix their compensation; may have a common seal, and change the same at pleasure; may sue and be sued, appear, prosecute and defend in the corporate name to final judgment and execution, and appoint agents and attorneys for that purpose; and shall have perpetual succession, unless incorporated or formed for a limited term or dissolved as provided by law.