Mo. Rev. Stat. § 65.170
65.170 Certificate — acceptance.
65.170. Certificate — acceptance. — Such person shall, within ten days thereafter, cause such certificate, together with his acceptance of the office, to be filed in the office of the township clerk; his neglect or refusal so to do shall be deemed a refusal to serve.
(RSMo 1939 § 13955) Prior revisions: 1929 § 12278; 1919 § 13191; 1909 § 11679