Registration
Registration means that the names of all persons named on the bond and the taxpayer identification number (TIN) of the owner, first-named coowner, or purchaser of a gift bond are maintained on our records.
Source
31 CFR § 353.2
Scoping language
Bond, or Series EE or HH savings bond, as used in this part, means a definitive United States Savings Bond of Series EE or HH.