Section 47-C. Refiling

The  filing  of  assignments shall be valid for a
  period of two years only.  The validity of the filing may in  each  case
  be  extended for successive additional periods of one year from the date
  of refiling by filing in the office of the county clerk of the county in
  which the original assignment or duly  authenticated  copy  thereof  was
  filed  a  true  copy  of the original assignment within thirty days next
  preceding the expiration of  each  period,  with  a  statement  attached
  signed  and verified by or on behalf of the assignee, setting forth that
  the assignment is in force and stating the amount remaining unpaid. Such
  copy, with statement attached, shall be filed and entered  in  the  same
  manner  as an assignment or copy thereof filed and entered for the first
  time, and the filing officer shall be entitled to a like fee as upon the
  original filing.