Section 47-B. Filing, entering and indexing

1. The filing officer shall
  mark upon the assignment or true copy thereof filed with him the date of
  its filing and shall file such assignment or true copy  thereof  in  his
  office  for public inspection. He shall keep a separate book in which he
  shall enter the names of the assignor and  assignee,  the  date  of  its
  filing,  its  filing  number and the date of cancellation thereof, or of
  its vacation  by  order  of  the  court.  Such  book  shall  be  indexed
  alphabetically  under  the  names  and  changed  names,  if any, of both
  assignor and assignee.
    2.  A  county  clerk  may  adopt  a  new  indexing  system   utilizing
  electro-mechanical, electronic or any other method he deems suitable for
  maintaining the indexes.