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Explanation: The following definitions were obtained from the West's Law and Comm. Dic.
REGISTRANT (lo traduce como REGISTRANTE) - One who registers, particularly, one who registers anything (e.g., a trademark) for the purpose of securing a right or privilege granted by law on condition of such registration.
REGISTRAR/RECORDER/REGISTER (lo traduce como REGISTRADOR, ARCHIVISTA, AGENTE DE REGISTRO) - An officer who has the custody and charge of keeping a record called a "register" or "registry".
REGISTRAR OF DEEDS (lo traduce como JEFE DE CATASTRO) - A term used in some states to describe the person in charge of recorded instruments affecting land title.