Revised Corporation Code
Section 20. Corporation by Estoppel. - All persons who assume to act as a corporation knowing it to be without the authority to do so shall be liable as general partners for all debts, liabilities and damages incurred or arising as a result thereof: Provided, however, That when any such ostensible corporation is sued on any transaction entered by its as a corporation or on any tort committed by it as such, it shall not be allowed to use on any its lack of corporate personality as a defense. Anyone who assumes an obligation to an ostensible corporation as such cannot resist performance thereof on the ground that there was in fact no corporation.