change to product bulletin no. 1 of 2002 Change to Product Bulletin No. 1 2002 3 October, 2002 Subject: Serialization, new emergency valve and new nose block device on all new Miller Diving® 400 Helmets miller diving® helmet serial number request Miller Diving® Helmet Serial Number Request Subject: Serialization of all new Miller Diving® 400 Helmets Serial Number Request Form change to product bulletin no. 3 of 2002 Change to Product Bulletin No. 3 2002, 18 December. Subject: Regulator Parts Change