§ 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.