Corp. Code, § 400

(a) A corporation may issue one or more classes or series of shares or both, with full, limited or no voting rights and with such other rights, preferences, privileges and restrictions as are stated or authorized in its articles. No denial or limitation of voting rights shall be effective unless at the time one or more classes or series of outstanding shares or debt securities, singly or in the aggregate, are entitled to full voting rights; and no denial or limitation of dividend or liquidation rights shall be effective unless at the time one or more classes or series of outstanding shares, singly or in the aggregate, are entitled to unlimited dividend and liquidation rights.

(b) All shares of any one class shall have the same voting, conversion and redemption rights and other rights, preferences, privileges and restrictions, unless the class is divided into series. If a class is divided into series, all the shares of any one series shall have the same voting, conversion and redemption rights and other rights, preferences, privileges and restrictions.