Wash. Rev. Code § 63.14.110
(2) When such subsequent purchases are made, if the seller has retained title or taken a lien or other security interest in any of the goods purchased under any one of the contracts included in the consolidation:
[ 2012 c 117 s 170; 1999 c 113 s 3; 1967 c 234 s 6; 1963 c 236 s 11.]