Errata In the list of patents which expired on July 9, 1999, due to failure to pay maintenance fees, in the OG of September 7, 1999, Patent Number 5,031,111 should not have appeared since the fee was timely paid. In the list of patents which expired on April 7, 2000, due to failure to pay maintenance fees, in the OG of June 20, 2000, Patent Number 5,101,904 should not have appeared since the fee was timely paid. In the list of patents which expired on February 18, 1998, due to failure to pay maintenance fees, in the OG of April 28, 1998, Patent Number 5,287,331 should not have appeared since the fee was timely paid. In the list of patents which expired on October 4, 1998, due to failure to pay maintenance fees, in the OG of December 15, 1998, Patent Number 5,352,291 should not have appeared since the fee was timely paid. In the list of patents which expired on January 2, 2000, due to failure to pay maintenance fees, in the OG of March 14, 2000, Patent Number 5,481,103 should not have appeared since the fee was timely paid. In the list of patents which expired on April 16, 2000, due to failure to pay maintenance fees, in the OG of June 27, 2000, Patent Number 5,509,035 should not have appeared since the fee was timely paid. In the list of patents which expired on July 2, 2000, due to failure to pay maintenance fees, in the OG of September 5, 2000, Patent Number 5,531,572 should not have appeared since the fee was timely paid.