Cal. Probate Code § 9052

The notice shall be in substantially the following form: NOTICE OF ADMINISTRATION OF ESTATE OF _______, DECEDENT Notice to creditors: Administration of the estate of _________ (deceased) has been commenced by _________ (personal representative) in Estate No. _________ in the Superior Court of California, County of _________. You must file your claim with the court and deliver a copy pursuant to Section 1215 of the California Probate Code to the personal representative within the last to occur of four months after _________ (the date letters were first issued to a general personal representative, as defined in subdivision (b) of Section 58 of the California Probate Code), or 60 days after the date this notice was mailed to you or, in the case of personal delivery, 60 days after the date this notice was delivered to you, or you must petition to file a late claim as provided in Section 9103 of the California Probate Code. Failure to file a claim with the court and serve a copy of the claim on the personal representative will, in most instances, invalidate your claim. A claim form may be obtained from the court clerk. For your protection, you are encouraged to file your claim by certified mail, with return receipt requested. (Date of mailing this notice) (Name and address of personal representative or attorney)