<page_title> HP LaserJet 4000 series </page_title> <section_title> Comparison </section_title> <table> <cell> 4100 <col_header> Model </col_header> </cell> <cell> March 2001 <col_header> Introduction </col_header> </cell> <cell> February 2003 <col_header> Discontinued </col_header> </cell> </table>
The LaserJet 4100 series was introduced in March 2001, and was discontinued in February 2003.