Errata

   In the list of patents which expired on October 1, 1997, due to
failure to pay maintenance fees, in the OG of December 9, 1997, Patent
Number 5,248,787 should not have appeared since the fee was timely
paid.

   In the list of patents which expired on November 29, 2000, due
to failure to pay maintenance fees, in the OG of January 30, 2001,
Patent Number 5,578,221 should not have appeared since the fee was
timely paid.

   In the list of patents which expired on July 2, 1997 due to
failure to pay maintenance fees, in the OG of September 9, 1997 Patent
Number 5,223,847 should not have appeared since the fee was timely
paid.

   In the list of patents which expired on November 22, 2000 due
to failure to pay maintenance fees, in the OG of January 23, 2001
Patent Number 5,163,997 should not have appeared since the fee was
timely paid.

  In the list of patents which expired on March 12, 1997 due to
failure to pay maintenance fees, in the OG of May 20, 1997 Patent
Number 5,192,931 should not have appeared since the fee was timely
paid.

   In the list of patents which expired on January 19, 2000 due to
failure to pay maintenance fees, in the OG of March 28, 2000 Patent
Number 5,484,628 should not have appeared since the fee was timely
paid.

   In the list of patents which expired on September 6, 2000 due
to failure to pay maintenance fees, in the OG of November 7, 2000
Patent Number 5,552,146 should not have appeared since the fee was
timely paid.

   In the list of patents which expired on December 31, 1997, due
to failure to pay maintenance fees, in the OG of March 10, 1998, Patent
Number 5,274,435 should not have appeared since the fee was timely
paid.

   In the list of patents which expired on October 15, 1997, due
to failure to pay maintenance fees, in the OG of December 23, 1997,
Patent Number 5,251,819 should not have appeared since the fee was
timely paid.