U.S. Patent and Trademark CD-ROM Products

  Effective October 1, 1994, prices for U.S. Patent and Trademark patent
CD-ROM products will be as follows:

  CASSAS/CLASS: $300/yearly subscription
  CASSIS/BIB: $300/yearly subscription
  CASSIS/ASIGN: $200/yearly subscription
  ASIST: $200/yearly subscription

  Patent Technology Sets
  Generic Engineering: $300/six-disc set
  Acid Rain: $250/five-disc set

CASSIS/CLASS: Current classification information for all Utility,
              Design, Plant, Reissue, and X-numbered patents, as well as
              Defensive Publications and Statutory Invention Registrations
              issued from 1790 to the present (over 5.5 million documents).
              Updated bi-monthly.

CASSIS/BIB:   Bibliographic information for Utility patents issued
              from 1969 to the present, and for other patents documents
              issued from 1977 to the present. Information includes patent
              title, year of issue, state/county of the first-listed
              inventor's residence at time of issue, assignee at time of
              issue, status (withdrawn, expired for failure to pay
              maintenance fees or certificate of correction issued) and current
              classification. The most recent patent abstracts are also included.
              Updated bi-monthly.

CASSIS/ASIGN: Text of patent assignment records recorded at the
              U.S. Patent and Trademark Office since 1980. Updated quarterly.

ASIST: Additional Support and Information Search Tools. Included
       are a Patentee-Assignee File showing assignments at time of issue for
       utility patents 1969+, for other patent types 1977+, and inventor names
       1975+; Attorney Roster File; Index to the U.S. Patent Classification,
       IPC-USPC Concordance; Class Definitions, Manual of Classification; Manual
       of Patent Examining Procedure and a Classification Order Index. The latter
       is a list of subclass numbers established and abolished 1976+. Updated
       quarterly.

  Patent Technology Sets: These CD-Rom products are collections of
                          U.S. patents which, by virtue of their placement in
                          the U.S. Patent Classification System, represent
                          meaningful technological groupings.
                          Facsimile images and searchable text are included.

  Genetic Engineering: Includes patents which issued through January
                       26, 1993 and were included in the following
                       classifications as of June 29,
                       1993: Class 935, all subclasses; Class 435,
                       subclass 172.3.

  Acid Rain: Includes patents which issued through April 28, 1992 and
             which were included in the following classification as of the
             same date: Class 55, subclass 73; Class 423, suclasses 220-234
             and 242-244.
For additional information or to request an order form, please contact:

               Office of Information Products Development
                        Crystal Plaza 2, Room 9D30
                           Washington, D.C. 20231
                            Phone: (703) 308-0322
                             Fax: (703) 308-0493