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Rules to bind members. 
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15.—(1) Subject to subsection (2), the registered rules of a credit union shall bind the credit union and all members of it and all persons claiming through them respectively to the same extent as if— 
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(a) each member had subscribed his name and affixed his seal to those rules; and 
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(b) there were contained in those rules a covenant on the part of each member and any person claiming through him to conform to those rules subject to the provisions of this Act. 
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(2) A member of a credit union shall not, without his consent in writing having been first obtained, be bound by any amendment of the credit union's rules registered after he became a member, if and so far as that amendment— 
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(a) requires him to subscribe for more shares than the number held by him at the date of registration of the amendment; or 
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(b) requires him to pay upon the shares so held any sum exceeding the amount unpaid upon them at that date; or 
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(c) in any other way increases his liability to contribute to the share capital of the credit union. 
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