Revised Code of Washington Title 82 — Excise Taxes
RCW 82.04.210 — "By-product." "By-product" means any additional product, other than the principal or intended product, which results from extracting or manufacturing activities and which has a market value, without regard to whether or not such additional product was an expected or intended result of the extracting or manufacturing activities
[ 1961 c 15 s 82.04.210 . Prior: 1955 c 389 s 22 ; prior: 1949 c 228 s 2, part; 1945 c 249 s 1, part; 1943 c 156 s 2, part; 1941 c 178 s 2, part; 1939 c 225 s 2, part; 1937 c 227 s 2, part; 1935 c 180 s 5, part; Rem. Supp. 1949 s 8370-5, part.]
Source: official text