(4) Where an application is divided under section 23(2) of the Act— (a) the filing date for each divisional application shall be the filing date of the initial application; (b) any declaration of priority in the initial application shall be deemed to be included in each divisional application; and (c) the applicant shall pay the application fee and any other fees payable in respect of the additional applications resulting from the division. 16. Declaration claiming priority. (1) The declaration claiming priority under section 24 of the Act shall include, in respect of each earlier application— (a) the date and number of the earlier application; (b) the symbol of the international patent classification that was assigned to the earlier application or, if no such symbol has been assigned, a statement of that fact; (c) if the earlier application was a national application, the name of the state in which it was filed; and (d) if the earlier application was a regional or international application, the name of the office in which it was filed and the name of the state for which it was filed. (2) Where the number of the earlier application, as required under subregulation (1)(a), is not known at the time of making the declaration, the declaration shall include a statement of that fact and the declaration shall be amended to include the number within ninety days after the application containing the declaration is made. (3) A certified copy of the earlier application required by the registrar under section 24(4) of the Act shall be furnished within ninety days after the requirement was made. 217