Section 419C.312 - Alternate service(1) If any parent or guardian required to be summoned as provided in ORS 419C. 306 cannot be found within the state, a summons may be served on the parent or guardian in any of the following ways: (a) If the address of the parent or guardian is known, by sending the parent or guardian a copy of the summons by registered or certified mail with a return receipt to be signed by the addressee only.(b) By personal service outside the state.(2) Service as provided in this section and ORS 419C. 309 shall vest the court with jurisdiction over the parents or guardian in the same manner and to the same extent as if the person served were served personally within this state.1993 c.33 §206; 1993 c.546 §75