CA Food & Agric Code Section 29053

(a)

If the purchaser does not have a registered brand number, he or she may use a brand acquired by purchase if a bill of sale on the purchased brand number is forwarded by registered mail to the director accompanied by a transfer fee as established and periodically updated by the director by regulation.

(b)

If the purchaser has a previously registered brand number, he or she may have other brand numbers transferred to his or her name, without charge, but he or she shall destroy any and all branding irons or branding devices acquired by the transfer and notify the director of the destruction.