AN INVALIDITY PENSION IN GERMANY UNDER GERMAN LEGISLATION REFERRED TO AS BEING OF TYPE B, WHICH MEANS THAT, IN PRINCIPLE, BENEFITS ARE CALCULATED AFTER TAKING THE LENGTH OF COMPLETED PERIODS INTO ACCOUNT .
4 IT WAS ESSENTIAL TO APPLY ARTICLE 27 OF REGULATION NO 3 BEFORE AN ENTITLEMENT TO BENEFIT COULD ARISE UNDER GERMAN LEGISLATION .
5 THE BELGIAN INSURER, MAINTAINING THAT THE PROPORTION OF THE BELGIAN BENEFIT CORRESPONDING TO THE BENEFITS GRANTED BY THE GERMAN INSURER FOR ONE AND THE SAME INCAPACITY WAS NO MORE THAN A RECOVERABLE ADVANCE WITHIN THE MEANING OF ARTICLE 34 ( 3 ) OF REGULATION NO 4, BROUGHT AN ACTION FOR REPAYMENT ( BUT ONLY IN 1972 ) OF PART OF THE SUMS PAID BETWEEN 1 JANUARY 1959 AND 31 OCTOBER 1959 .
6 THE QUESTIONS TO BE ANSWERED ARE : WHAT IS THE PERIOD OF LIMITATION TO BE APPLIED TO THE ACTION UNDER THE LAW OF THE COMMUNITY; WHEN DOES THIS PERIOD BEGIN TO RUN; AND IN WHAT CIRCUMSTANCES MAY THE PERIOD BE INTERRUPTED?
7 IN ASKING THESE QUESTIONS THE NATIONAL COURT CAN BE REFERRING ONLY TO AN ACTION FOR REPAYMENT OF SUMS PAID PURSUANT TO ARTICLE 34 ( 3 ) OF REGULATION NO 4 OF THE COUNCIL AND NOT TO THOSE PAID UNDER THE PROVISIONS OF NATIONAL LAW .
8 ARTICLE 34 ( 3 ) PROVIDES AS FOLLOWS : 'BEFORE DETERMINING THE BENEFIT IN ACCORDANCE WITH ARTICLES 26 TO 28 OF THE REGULATION, AND IN CASES WHICH MIGHT LEAD TO DELAY, THE SCRUTINEER INSTITUTION SHALL MAKE A RECOVERABLE ADVANCE, CALCULATED ON THE BASIS OF THE AMOUNT OF BENEFIT WHICH WOULD BE PAYABLE UNDER THE NATIONAL LEGISLATION APPLIED BY THE SAID INSTITUTION, TAKING ACCOUNT OF THE PROVISIONS OF THE REGULATION '.
9 APPLICATION BY ANALOGY OF ARTICLES 27 AND 28 OF REGULATION NO 3 TO THE CASES REFERRED TO UNDER ARTICLE 26 ( 1 ) MEANS THAT APPORTIONMENT OF BENEFITS MAY NOT BE MADE UNLESS IT HAS BEEN NECESSARY, IN ORDER TO GIVE RISE TO ENTITLEMENT, TO AGGREGATE BEFOREHAND THE PERIODS COMPLETED UNDER DIFFERENT LEGISLATIONS .
10 IT FOLLOWS THAT ARTICLE 34 ( 3 ) IS APPLICABLE ONLY IN CASES WHERE PRIOR AGGREGATION IS AN ESSENTIAL CONDITION OF ENTITLEMENT .
11 THIS POSITION CANNOT ARISE IN A CASE CONCERNING AN INVALIDITY BENEFIT IN A MEMBER STATE WITH A TYPE A INVALIDITY INSURANCE SCHEME, WHICH DOES NOT TAKE THE LENGTH OF COMPLETED PERIODS INTO ACCOUNT .
12 IN ANY CASE, AS THE SYSTEM EMBODIED IN REGULATIONS NOS 3 AND 4 RESTS ON MERE COORDINATION OF NATIONAL LEGISLATION IN THE FIELD OF SOCIAL SECURITY AND DOES NOT AFFECT THE RULES ON LIMITATION LAID DOWN BY SUCH LEGISLATIONS, IT WAS NOT ABSOLUTELY NECESSARY THAT THESE REGULATIONS SHOULD LAY DOWN RULES EITHER ON LIMITATION OR ON TIME LIMITS .
13 AS ARTICLE 34 ( 3 ) IS INTEGRATED WITH THE PROVISIONS OF NATIONAL SOCIAL SECURITY LAWS AND SUPPLEMENTS THEM, PAYMENTS MADE ON THIS DUAL BASIS DO NOT ARISE ONLY BY VIRTUE OF COMMUNITY LAW, FROM WHICH IT