rier service, or (c) three business days after deposit in registered or certified mail, return receipt requested, addressed as follows: To Seller: cro Kevin F. D'Amour, P.C. 5143 Palm Passage Suites 18B and 19B 02 I 7 EFTA00583527 To Purchaser: clo Kellerhals Ferguson Kroblin PLLC Royal Palms Professional