CAL. CCP. CODE § 410.50 : California Code - Section 410.50

(a) Except as otherwise provided by statute, the court in which an action is pending has jurisdiction over a party from the time summons is served on him as provided by Chapter 4 (commencing with Section 413.10). A general appearance by a party is equivalent to personal service of summons on such party.

(b) Jurisdiction of the court over the parties and the subject matter of an action continues throughout subsequent proceedings in the action. 410.60. In an action against a corporation which has forfeited its charter or right to do business, or has dissolved, the court in which the action is pending has jurisdiction over all the trustees of such corporation and of its stockholders or members from the time summons is served on one of the trustees as provided by Chapter 4 (commencing with Section 413.10).