Errata

   In the list of patents which expired on April 16, 1997 due to failure
to pay maintenance fees, in the OG of June 24, 1997, Patent Number
4,511,359 should not have appeared since the fee was timely paid.

   In the list of patents which expired on December 14, 1997 due to failure
to pay maintenance fees, in the OG of February 24, 1998, Patent Number
4,885,811 should not have appeared since the fee was timely paid.