Section 243. Extension of time

The time within which any act is required to
  be  done under the foregoing sections of this article may be extended by
  the supreme court for good cause  shown,  for  one  year,  and  but  one
  extension  will  be granted. Any company that has heretofore constructed
  or is now operating an elevated railroad shall be deemed  to  have  been
  duly   incorporated   notwithstanding   any   failure  on  the  part  of
  commissioners to  insert  in  its  articles  of  association  provisions
  complying with statutory requirements relative to such articles.