Child restraint system is used as defined in S4 of 49 CFR 571.213 , Child Restraint Systems.
Factory-installed built-in child restraint system is used as defined in S4 of 49 CFR 571.213 .
Owners include purchasers.
Registration form means the form provided with a child restraint system in compliance with the requirements of 49 CFR 571.213 , and any communication from an owner of a child restraint to the manufacturer that provides the restraint's model name or number and the owner's name and mailing address.
49 C.F.R. § 588.4