Oregon Revised Statutes Agricultural Marketing and Warehousing § 587.130

The State Department of Agriculture shall file in the office of the county clerk of the county wherein the grain is stored a copy of the warehouse certificate. The certificate shall be indexed under chattel mortgages. The filing fee shall be paid by the department and charged to the general expense of the administration of this chapter. The filing is notice that the grain described therein is pledged to the redemption of an outstanding negotiable warehouse certificate.