24. No act, document or writing shall bind the Société unless it is signed by the chairman of the board of directors, by the president and general manager of the Société or, to the extent determined by by-law of the Société, by a member of its personnel.
The Société may allow, subject to the conditions and on the documents it determines, that a required signature be affixed by means of an automatic device or that a facsimile of a signature be engraved, lithographed or printed.However, the facsimile shall have the same force as the signature itself only if the document is countersigned by a person authorized by the chairman of the board of directors or by the president and general manager of the Société.