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U.S. PATENT AND TRADEMARK OFFICE
Electronic Information Products Division
Patent Technology Monitoring Branch (PTMB)

Patenting In Technology Classes,
Breakout By Organization

Count of 1969 - 2005 Utility Patent Grants,
By Calendar Year of Grant
With Patent Counts Based on Primary Patent Classification

- Explanation of Data -

Rank Ordered Listing of Organizations Receiving 5 or More Utility Patents During the Period
Having Primary Classification In

Class 299, Mining or In Situ Disintegration of Hard Material

( technology class is determined by the primary classification assigned to the patent- see 'Explanation of Data' )
( patent ownership is determined by the first-named assignee listed on a patent )

The following table displays first-named assignees and counts of their associated patents, as distributed by the year of patent grant
First-Named Assignee 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 Total
~Individually Owned Patent 27 23 21 37 33 25 17 28 22 18 17 26 32 14 24 26 15 12 25 21 16 18 15 16 16 6 11 8 11 10 12 10 15 8 12 7 4 658
GEWERKSCHAFT EISENHUTTE WESTFALIA GMBH 6 2 1 1 6 10 12 3 8 8 9 8 11 6 9 6 8 5 2 3 2 1 0 5 1 0 0 0 0 0 0 0 0 0 0 0 0 133
OCCIDENTAL OIL SHALE, INC. 0 0 0 0 0 0 0 0 7 7 12 12 12 12 11 19 5 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 98
GEBR. EICKHOFF MASCHINENFABRIK UND EISENGIESSEREI M.B.H. 5 1 6 3 1 2 1 3 3 7 4 5 4 2 4 8 2 3 1 2 5 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 77
COAL INDUSTRY (PATENTS) LIMITED 0 1 1 3 6 2 2 4 5 7 3 11 4 4 4 3 6 1 2 1 0 3 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 76
KENNAMETAL INC. 0 3 0 2 1 6 1 0 1 1 0 1 0 3 1 0 1 0 3 1 2 4 3 2 2 2 2 1 6 5 0 3 2 4 0 3 3 69
VOEST-ALPINE AKTIENGESELLSCHAFT 0 0 0 0 0 0 0 0 0 0 0 0 3 1 4 1 5 4 7 7 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 35
UNITED STATES OF AMERICA, DEPARTMENT OF THE INTERIOR 1 0 0 0 0 0 2 0 3 0 1 1 7 2 2 1 1 0 0 0 0 1 3 4 0 1 2 0 0 0 0 0 0 0 0 0 0 32
SHELL OIL COMPANY 4 6 3 2 4 1 2 3 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 29
ATLANTIC RICHFIELD COMPANY 0 0 2 0 1 0 4 1 3 5 1 2 2 0 0 1 1 1 0 0 0 1 0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 28
CATERPILLAR INC. 0 0 0 0 1 0 5 0 1 1 0 2 2 1 1 1 1 0 1 0 1 2 3 1 0 1 0 0 1 0 1 0 0 0 1 0 0 28
MOBIL OIL CORP. 0 0 0 0 0 0 0 1 0 1 0 3 2 6 4 4 3 1 2 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 28
DRESSER INDUSTRIES, INC. 1 0 0 1 0 0 8 2 2 2 2 3 2 0 0 1 0 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 27
HALBACH + BRAUN 1 1 0 0 0 1 0 0 0 0 2 0 1 4 5 0 0 2 2 1 0 1 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 24
CINCINNATI MINE MACHINERY COMPANY 0 1 3 4 3 3 0 0 1 0 1 0 1 1 1 0 0 1 1 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 23
CONOCO, INC. 1 0 1 0 4 2 2 2 1 0 1 0 4 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 21
ROBBINS COMPANY 0 0 0 0 0 3 1 1 1 0 0 4 1 0 1 0 2 0 0 0 0 0 0 1 5 1 0 0 0 0 0 0 0 0 0 0 0 21
KENNECOTT CORPORATION 0 0 0 1 0 4 5 1 2 3 0 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 19
NATIONAL MINE SERVICE COMPANY 1 0 0 0 2 1 0 0 0 2 0 1 4 3 1 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 18
BOCHUMER EISENHUTTE HEINZMANN GMBH & CO., KG 0 0 0 0 0 0 1 0 0 1 0 1 2 0 0 0 0 1 0 0 2 1 0 3 2 0 0 0 2 0 1 0 0 0 0 0 0 17
THE SOLLAMI COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 0 0 1 0 4 4 2 3 17
JOY MANUFACTURING COMPANY 0 0 0 0 0 0 0 3 1 0 0 3 1 2 0 2 1 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16
ATLAS COPCO AB 0 0 0 3 0 2 0 1 1 4 1 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 15
VEREINIGTE OSTERREICHISCHE EISEN- UND STAHLWERKE-ALPINE MONT 0 0 0 0 0 1 1 1 0 6 2 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 14
CONSOLIDATION COAL COMPANY 0 0 0 0 0 0 2 1 1 1 0 0 0 1 0 0 0 0 0 0 3 1 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 13
KABUSHIKI KAISHA KOMATSU SEISAKUSHO 0 0 0 0 0 0 0 2 1 0 0 1 0 1 0 1 0 2 0 0 1 0 0 1 0 1 1 1 0 0 0 0 0 0 0 0 0 13
LEE-NORSE COMPANY 1 0 1 2 2 2 1 1 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12
COALTEX, INC. 0 0 0 0 0 0 0 0 2 2 1 2 0 0 0 0 1 0 0 0 1 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 11
OCCIDENTAL PETROLEUM CORPORATION 0 0 1 1 0 0 1 2 5 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11
SANDVIK AKTIEBOLAG 0 0 0 1 0 1 0 0 0 0 1 0 2 0 0 0 0 0 0 0 0 1 1 0 0 0 1 1 0 0 0 1 0 0 0 1 0 11
TAMROCK WORLD CORPORATION, N.V. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 4 1 0 0 0 0 0 0 0 0 0 0 0 11
UNITED STATES OF AMERICA, DEPARTMENT OF ENERGY 0 0 0 0 0 1 1 1 1 0 1 1 0 0 1 1 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 11
BETEK BERGBAU-UND HARTMETALLTECHNIK KARL-HEINZ SIMON GMBH & 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 1 0 0 0 0 0 1 3 3 0 0 10
JEFFREY GALION INC. 1 5 0 0 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10
JOY MM DELAWARE, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 2 1 0 2 1 0 1 1 10
MINNOVATION LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1 0 0 0 1 0 0 1 0 2 1 1 0 1 0 10
TAIHEIYO ENGINEERING INC. 0 0 0 0 0 0 0 0 1 4 0 1 3 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10
AMOCO CORPORATION 0 0 0 0 0 0 0 0 0 2 0 1 0 1 0 3 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
DEMAG AKTIENGESELLSCHAFT 1 1 5 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
DRESSER EUROPE S.A. 0 0 0 0 0 0 0 0 1 2 1 1 2 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
WESTINGHOUSE AIR BRAKE COMPANY 9 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
WIRTGEN GMBH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 1 2 0 0 3 9
DBT DEUTSCHE BERGBAU-TECHNIK GMBH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 0 1 0 3 0 0 0 0 8
DOSCO OVERSEAS ENGINEERING LIMITED 0 0 0 0 0 0 0 0 2 1 0 0 1 0 0 0 0 0 0 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
FANSTEEL INC. 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 0 1 1 1 0 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 8
GTE PRODUCTS CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 0 3 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
GULF OIL CORPORATION 0 0 0 0 0 0 0 0 0 1 2 3 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
JARVA, INC. 0 0 1 1 1 1 0 0 1 0 0 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
PADLEY + VENABLES LIMITED 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 2 1 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
SANTRADE LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 3 1 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 8
AUSTIN HOY AND COMPANY, LTD. 2 1 0 0 2 0 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
CHRISTENSEN DIAMOND PRODUCTS COMPANY 1 0 5 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
FLETCHER, H. E., CO. 0 0 3 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
GURRIES COMPANY 0 0 0 0 0 0 0 0 0 0 0 3 3 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
JOY TECHNOLOGIES INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 1 2 0 1 0 0 0 0 0 0 0 0 0 0 0 7
KENNAMETAL PC INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 2 0 0 0 7
MINING TECHNOLOGIES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 2 0 1 1 0 0 0 0 0 0 7
OCCIDENTAL RESEARCH CORPORATION 0 0 0 0 0 0 0 0 0 0 1 1 1 1 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
PHILLIPS PETROLEUM COMPANY 0 1 0 0 0 0 0 0 0 0 0 0 0 1 0 0 3 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
PPG INDUSTRIES CANADA LTD. 0 0 0 0 0 0 0 0 1 0 0 3 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
ANGLO-TRANSVAAL CONSOLIDATED INVESTMENT COMPANY LIMITED 0 0 0 1 4 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
BECHTEL INTERNATIONAL CORPORATION 0 0 1 0 0 0 1 2 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
CITIES SERVICE COMPANY 0 1 1 0 1 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
CMI CORPORATION 0 0 0 0 0 0 0 0 0 0 1 2 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
DM TECHNOLOGIES LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 1 2 1 6
DOBSON PARK INDUSTRIES PLC. 0 0 0 0 1 1 1 0 0 1 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
E. I. DU PONT DE NEMOURS AND COMPANY 0 0 1 0 1 0 1 0 0 0 0 1 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
FMC CORPORATION 0 0 0 0 1 0 0 0 0 2 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 6
FREEPORT MINERALS COMPANY 0 0 0 0 0 0 0 0 1 2 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
GREENSIDE MACHINE COMPANY LIMITED 0 0 2 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
KAISER RESOURCES LTD. 0 0 0 0 0 0 0 0 3 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
KALIUM CHEMICALS LIMITED 0 1 3 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
KRAMPE & CO. 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
MAN TAKRAF FORDERTECHNIK GMBH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 2 0 1 0 1 6
STOLAR, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 2 2 0 0 0 0 1 0 0 0 0 0 0 0 6
UNION INDUSTRIELLE BLANZY-QUEST 0 1 0 1 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
VOEST-ALPINE BERGTECHNIK GESELLSCHAFT M.B.H. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 1 0 0 1 0 0 1 6
ALLIED-SIGNAL INC. 0 0 0 2 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
ANDERSON STRATHCLYDE PLC 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
BERGWERKSVERBAND GMBH 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 5
CARMET COMPANY 0 0 2 0 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
CATERPILLAR PAVING PRODUCTS INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 2 0 0 0 0 1 0 1 0 0 0 0 5
CENTRALNY OSRODEK PROJEKTOWOKONSTRUKCYJNY MASZYN GORNICZYCH 0 0 0 0 0 0 0 0 0 0 0 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
CHARBONNAGES DE FRANCE 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
GENERAL ELECTRIC COMPANY 1 1 1 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
GOSUDARSTVENNY PROEKTNO-KONSTRUKTORSKY I EXPERIMENTALNY INST 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
GULLICK DOBSON LIMITED 0 0 0 1 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 5
INSTITUT CERAC SA 0 0 0 0 0 0 0 1 0 2 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
INSTITUTE OF GAS TECHNOLOGY 0 0 1 0 1 1 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
KABUSHIKI KAISHA ISEKI KAIHATSU KOKI 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 5
KEYSTONE ENGINEERING & MANUFACTURING CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 1 1 0 0 0 0 1 0 5
KLOCKNER-BECORIT GMBH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 5
KLOCKNER-WERKE AG 0 0 1 1 0 0 1 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
M.A.N.-MASCHINENFABRIK AUGSBURG-NURNBERG AKTIENGESELLSCHAFT 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
PEABODY COAL COMPANY 0 0 0 0 0 0 0 0 0 2 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
RUHRKOHLE AG 0 0 0 0 0 0 0 0 1 0 0 1 1 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
TAIHEIYO COAL MINING CO., LTD. 0 0 0 0 0 4 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
TEKKEN CONSTRUCTION CO. LTD. 0 0 0 0 0 0 0 0 0 2 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
TEXAS GULF, INC. 1 0 0 0 0 0 0 0 0 0 0 0 1 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
TRW INC. 0 0 0 0 0 0 0 0 2 1 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
UNION OIL COMPANY OF CALIFORNIA 0 0 0 0 0 0 0 0 0 1 0 0 0 2 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
WORLD OIL MINING LTD. 0 0 0 0 0 0 0 4 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5


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