55. Where registration of a trade mark is not completed within 12 months from the date of the application by reason of default on the part of the applicant, the Registrar may give notice in writing to the applicant at his trade or business address of the non-completion, but if the applicant has authorised an agent for the purpose of the application, he may instead send the notice to the agent and may send a duplicate thereof to the applicant. If after 14 days from the date when the notice was sent, or such further time as the Registrar may allow, the registration is not completed, the application shall be deemed to be abandoned.