(3)Every license, written permission, notice, bill summons or other document which is required by this Act or any rule or bye-law made thereunder to bear the signature of the President, Vice-President or the Chief Executive Officer, or of any such member of any Committee as has been specially authorised by the Board in this behalf shall be deemed to be properly signed if it bears facsimile of the signature of any such officer or member, as the case may be, stamped thereon.