The director shall have authority to extend the time prescribed under this chapter for filing exportation certificates or claiming exemption for sales to the armed forces: PROVIDED, That written request is filed with the director showing cause for failure to do so within or prior to the prescribed period.
[1965 ex.s. c 79 § 11; 1961 c 15 § 82.36.260. Prior: 1957 c 247 § 13; prior: 1949 c 220 § 13, part; 1943 c 84 § 4, part; 1939 c 177 § 4, part; 1933 c 58 § 17, part; Rem. Supp. 1949 § 8327-17, part.]