R.I. Gen. Laws § 18-3-9: Acts performed before notice of revocation of power.

Notwithstanding the revocation of any power of attorney, whether by act of the donor of the power or by operation of law, any act done or instrument executed by the donee of the power shall be as valid and effectual in favor of any person dealing with the donee as if the power of attorney had remained unrevoked at the time when the act was done or the instrument was executed, unless the person dealing with the act or instrument had at that time actual notice of the revocation of the power of attorney.