123. No deed, document or writing binds the Office unless it is signed by the chairman, another member, the secretary or any member of its staff but, in this last case, only to the extent determined by regulation of the Office.
The Office may, by regulation and on such conditions as it may fix, allow the signature to be affixed by means of a stamp or to be replaced by an engraved, lithographed or printed facsimile, countersigned by a person authorized by the chairman of the Office.