California Code
CHAPTER 5 - Switchblade Knife
Section 21590.

21590. The unlawful possession or carrying of any switchblade knife, as provided in Section 21510, is a nuisance and is subject to Sections 18000 and 18005.

(Added by Stats. 2010, Ch. 711, Sec. 6. (SB 1080) Effective January 1, 2011. Operative January 1, 2012, by Sec. 10 of Ch. 711.)