PATENT EXAMINING CORPS

                          BRUCE LEHMAN, Commissioner
                LAWRENCE J. GOFFNEY, Jr., Assistant Commissioner
                STEPHEN G. KUNIN, Deputy Assistant Commissioner



                                                     Phone Number      New Case
PATENT  EXAMINING GROUPS                             Area Code 703       Date*

CHEMICAL EXAMINING GROUPS

GENERAL METALLURGICAL, INORGANIC, PETROLEUM AND
   ELECTRICAL CHEMISTRY, AND ENGINEERING, GROUP
   1100 -  JOHN E. KITTLE, Director                     308-0661        11/29/93
ORGANIC CHEMISTRY, GROUP 1200 - JOHN F. TERAPANE,
   JR., Director                                        308-1235        09/23/93
SPECIALIZED CHEMICAL INDUSTRIES AND CHEMICAL
   ENGINEERING, GROUP 1300 -RICHARD V. FISHER,
   Director                                             308-0651        02/08/94
HIGH POLYMER CHEMISTRY, PLASTICS, COATING, PHOTOGRAPHY,
   STOCK MATERIALS AND COMPOSITIONS, GROUP 1500 - J. O.
   THOMAS, Director                                     308-2351        12/09/93
BIOTECHNOLOGY, GROUP 1800 - BARRY S. RICHMOND,
   Director                                             308-0196        08/11/93

ELECTRICAL EXAMINING GROUPS

INDUSTRIAL ELECTRONICS, PHYSICS AND RELATED ELEMENTS,
   GROUP 2100 - JOSEPH J. ROLLA, Jr. Director           308-1782        10/12/92
SPECIAL LAWS ADMINISTRATION, GROUP 2200 - ROBERT E.
   GARRETT, Director                                    308-0511        04/19/93
COMPUTER SYSTEMS AND COMPUTER APPLICATION, GROUP 2300 -
   GERALD GOLDBERG, Director                            305-9600        10/26/92
PACKAGES, CLEANING, TEXTILES AND GEOMETRICAL
   INSTRUMENTS GROUP 2400 - CARLTON CROYLE, Director    308-0771        11/01/93
ELECTRONIC AND OPTICAL SYSTEMS AND DEVICES,
   GROUP  2500 - JANICE A. HOWELL, Director             308-0956        09/09/93
COMMUNICATIONS, MEASURING, TESTING AND LAMP/DISCHARGE
   GROUP, GROUP 2600 - BOBBY R. GRAY, Director          305-4700        04/08/93
DESIGN, GROUP 2900 - ROBERT E. GARRETT, Director        308-0511        02/02/93

MECHANICAL EXAMINING GROUPS

HANDLING AND TRANSPORTATION MEDIA, GROUP 3100 - F. R.
   SCHMIDT,  Director                                   308-1113        11/08/93
MATERIAL SHAPING, ARTICLE MANUFACTURING AND TOOLS,
   GROUP 3200 - N. GODICI, Director                     308-1148        10/19/93
MECHANICAL TECHNOLOGIES AND HUSBANDRY PERSONAL
   TREATMENT INFORMATION, GROUP 3300 - J. J. LOVE,
   Director                                             308-0858        11/25/93
SOLAR, HEAT, POWER, AND FLUID ENGINEERING DEVICES,
   GROUP 3400 - DONALD G. KELLY, Director               308-0861        06/04/93
GENERAL CONSTRUCTION, PETROLEUM AND MINING ENGINEERING,
   GROUP 3500  A.L. SMITH, Director                     308-1021        09/09/93


     *A communication from the examiner should have been received in most
applications filed prior to this date.

   Expiration of Patents: The patents within the range of numbers indicated
below expire during November 1994 except those which may have had their terms
curtailed by disclaimer under the provisions of 35 U.S.C. 253. Other patents,
issued after the dates of the range of numbers indicated below, may have
expired before the full term of 17 years for the same reasons, or have lapsed
under the provisions of 35 U.S.C. 151
Patents                               Numbers  4,055,852 to 4,060,851 inclusive
Plant Patents                                                    4,138 to 4,160