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U.S. PATENT AND TRADEMARK OFFICE
Office of Electronic Information Products
Patent Technology Monitoring Division (PTMD)

Patenting In Technology Classes
Breakout By Geographic Origin (State and Country)

Count of 1963 - 2004 Utility Patent Grants,
By Calendar Year of Grant
With Patent Counts Based on Primary Patent Classification

- Explanation of Data -

Rank Ordered Listing of U.S. States and Countries
From Which 1 or More Utility Patents Originated During the Period
Having Primary Classification In

Class 261, Gas and Liquid Contact Apparatus

( technology class is determined by the primary classification assigned to the patent- see 'Explanation of Data' )
( patent origin is determined by the residence of the first-named inventor )

The following table displays U.S. states and countries and counts of utility patents originating from them; patents are distributed by year of patent grant
(U.S. or Foreign) Code State-Territory or Country 1963 1964 1965 1966 1967 1968 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 Total
(U.S.) MI MICHIGAN 14 15 19 48 36 16 7 13 18 10 16 20 24 21 11 9 8 20 7 3 3 6 3 2 0 2 3 1 0 1 3 3 2 2 2 5 6 3 1 9 9 8 409
(U.S.) CA CALIFORNIA 3 5 16 12 20 12 7 5 6 10 15 19 14 13 20 12 9 12 7 5 6 11 4 6 10 5 11 10 9 9 3 4 4 5 4 4 4 8 13 4 7 5 368
(U.S.) NY NEW YORK 8 2 6 10 12 14 9 5 7 9 14 9 10 8 3 4 4 5 4 4 1 7 8 1 2 1 3 7 4 4 6 2 6 6 4 4 5 11 5 3 4 9 250
(U.S.) IL ILLINOIS 4 9 12 15 16 6 5 10 9 7 13 14 7 5 8 7 12 5 12 5 2 2 6 2 4 3 5 6 4 2 2 2 2 2 3 1 5 2 0 0 2 0 238
(U.S.) TX TEXAS 3 4 1 4 5 1 0 1 3 6 1 2 2 3 1 7 1 4 4 2 9 7 4 4 5 4 6 13 6 7 10 6 4 4 5 6 8 7 11 10 5 14 210
(U.S.) MO MISSOURI 18 9 12 15 13 4 2 0 4 5 6 5 7 2 5 5 7 1 7 1 1 2 4 1 1 1 3 1 5 2 0 0 2 3 1 1 4 0 6 2 2 3 173
(U.S.) OH OHIO 9 2 7 15 12 10 4 4 7 2 6 8 4 9 6 3 4 2 4 2 3 2 2 0 2 2 2 2 3 1 2 3 1 7 4 3 3 1 3 0 4 3 173
(U.S.) NJ NEW JERSEY 5 8 5 8 6 6 2 3 6 11 6 4 4 3 4 3 3 4 5 3 1 4 2 2 0 1 1 2 4 1 2 2 2 1 3 1 2 6 5 1 0 0 142
(U.S.) WI WISCONSIN 1 1 7 5 7 4 3 1 6 1 7 4 3 4 3 2 2 2 6 4 1 4 3 2 3 1 3 1 3 4 4 3 0 1 2 1 4 5 3 6 4 3 134
(U.S.) PA PENNSYLVANIA 3 3 8 4 1 6 3 3 6 3 5 3 5 4 2 4 0 5 2 3 1 4 2 0 3 2 3 2 5 3 1 1 1 3 2 0 4 3 3 4 5 2 127
(U.S.) MN MINNESOTA 0 1 1 3 4 2 1 0 3 1 2 6 4 2 0 1 0 7 2 1 0 1 2 0 2 3 3 2 3 5 3 4 1 5 3 6 3 2 3 2 3 1 98
(U.S.) FL FLORIDA 2 2 1 0 2 3 1 2 0 3 6 2 3 5 1 1 3 2 5 1 3 0 2 1 0 0 1 1 2 5 3 1 1 2 4 1 6 1 3 3 3 1 89
(U.S.) AZ ARIZONA 2 4 4 6 4 1 1 0 0 0 0 2 0 2 2 2 1 4 4 10 5 4 2 0 6 3 1 1 2 2 0 0 1 2 0 1 1 0 0 0 4 1 85
(U.S.) KS KANSAS 1 1 5 2 1 2 0 0 1 0 3 5 5 2 0 2 3 1 1 3 1 1 2 1 1 4 3 0 0 3 1 2 2 1 0 1 1 1 1 2 5 4 75
(U.S.) MD MARYLAND 0 1 1 2 1 1 2 5 3 2 4 6 4 1 1 0 0 2 1 1 2 0 2 3 1 2 1 4 1 1 4 0 1 0 0 2 1 0 3 1 3 1 71
(U.S.) MA MASSACHUSETTS 0 1 0 2 1 1 0 3 2 2 2 2 3 1 2 4 0 2 3 0 3 1 1 3 0 0 1 2 2 3 2 1 1 4 3 2 0 6 3 0 1 0 70
(U.S.) OK OKLAHOMA 2 2 2 2 0 1 4 0 2 1 5 0 0 0 2 0 1 0 4 1 2 1 3 1 1 0 1 0 2 1 1 1 2 4 0 0 3 4 1 0 1 0 58
(U.S.) CT CONNECTICUT 0 2 3 1 1 1 1 4 1 0 3 1 1 2 2 2 3 1 1 1 1 4 0 0 3 0 0 0 1 1 3 2 0 2 2 2 0 1 0 0 0 1 54
(U.S.) GA GEORGIA 0 0 0 0 0 0 0 0 3 0 1 0 0 0 0 0 0 1 3 5 0 0 2 2 1 1 6 4 0 0 0 0 0 1 1 2 1 1 2 3 2 2 44
(U.S.) VA VIRGINIA 2 0 1 2 1 4 1 2 1 2 1 1 3 0 1 0 0 2 0 1 0 0 0 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 3 2 34
(U.S.) CO COLORADO 2 0 0 0 0 1 0 0 0 1 1 1 1 3 1 1 0 2 1 0 1 0 2 2 0 2 0 1 0 0 0 0 2 2 0 1 2 1 0 0 0 1 32
(U.S.) IN INDIANA 0 3 4 1 0 0 0 3 1 2 2 1 0 1 0 0 0 0 1 0 0 0 0 2 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 23
(U.S.) NC NORTH CAROLINA 0 0 0 1 0 0 0 1 0 1 1 1 1 0 0 0 1 2 2 0 1 0 0 0 0 0 0 0 4 1 1 0 0 0 2 1 0 0 0 1 1 0 23
(U.S.) UT UTAH 0 0 0 0 0 0 0 0 0 0 0 1 1 1 3 0 1 1 2 0 0 0 1 2 0 1 1 0 1 2 0 0 1 1 0 0 0 0 1 0 0 0 21
(U.S.) WA WASHINGTON 2 0 1 0 0 0 0 0 0 0 1 2 0 0 1 0 1 1 2 0 1 1 1 0 0 1 0 1 0 0 1 0 1 0 0 0 1 0 1 0 1 0 21
(U.S.) LA LOUISIANA 1 1 1 0 1 2 1 1 1 0 2 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 0 1 1 0 1 0 0 18
(U.S.) TN TENNESSEE 1 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 0 0 0 0 1 1 1 1 2 1 1 2 2 2 2 18
(U.S.) KY KENTUCKY 0 1 1 1 1 1 2 0 1 1 0 0 2 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 2 0 0 16
(U.S.) NH NEW HAMPSHIRE 0 0 1 0 0 0 0 0 0 2 0 2 1 0 0 0 1 0 0 0 1 0 0 0 0 1 0 1 0 1 2 0 0 0 1 0 0 0 0 0 0 0 14
(U.S.) DE DELAWARE 1 1 0 1 0 0 0 1 0 0 1 0 1 0 1 1 0 0 1 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 1 13
(U.S.) SC SOUTH CAROLINA 0 0 1 0 0 0 0 0 0 1 1 0 0 0 1 0 0 0 2 1 0 1 1 1 0 1 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 13
(U.S.) OR OREGON 0 0 1 0 0 0 0 0 0 1 0 0 0 1 0 0 0 1 0 1 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 0 0 2 1 1 12
(U.S.) MS MISSISSIPPI 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 1 1 0 0 0 0 0 0 0 1 1 0 0 1 1 1 1 0 0 1 0 0 11
(U.S.) AL ALABAMA 1 0 1 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 10
(U.S.) IA IOWA 0 0 1 3 2 0 0 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 1 0 0 0 0 0 0 10
(U.S.) AR ARKANSAS 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 0 0 0 0 0 1 0 1 1 1 0 2 1 0 0 0 9
(U.S.) NV NEVADA 0 0 0 0 0 0 1 0 1 0 2 0 0 0 1 1 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 9
(U.S.) MT MONTANA 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 3 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 8
(U.S.) NE NEBRASKA 0 0 0 4 0 1 0 0 0 0 0 0 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 0 0 1 8
(U.S.) NM NEW MEXICO 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 1 0 1 0 1 0 0 0 0 0 0 0 0 0 1 8
(U.S.) ID IDAHO 0 0 0 0 0 0 1 0 0 0 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 0 0 0 1 1 0 1 5
(U.S.) WV WEST VIRGINIA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 5
(U.S.) WY WYOMING 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
(U.S.) ME MAINE 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 0 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 4
(U.S.) RI RHODE ISLAND 0 0 0 0 0 0 0 0 0 0 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 2 0 0 0 0 4
(U.S.) DC DISTRICT OF COLUMBIA 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 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 3
(U.S.) ND NORTH DAKOTA 0 0 0 1 0 0 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 0 0 0 0 3
(U.S.) AK ALASKA 0 0 0 0 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 0 0 0 0 0 0 2
(U.S.) HI HAWAII 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 0 0 0 0 0 0 0 0 0 0 0 0 1
(U.S.) SD SOUTH DAKOTA 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 0 0 0 0 0 0 0 0 0 0 1
(U.S.)   -- Subtotal -- 85 78 123 169 149 100 59 68 96 85 129 125 113 96 86 78 67 90 96 59 52 66 64 40 51 43 59 66 63 62 55 41 38 62 50 52 70 70 72 63 73 69 3232
(Foreign) JPX JAPAN 0 0 2 2 3 2 0 4 10 10 12 18 23 13 23 32 23 24 34 22 18 39 24 16 5 19 7 8 6 2 8 8 8 9 14 13 16 12 13 27 10 16 555
(Foreign) DEX GERMANY 1 3 3 4 6 2 8 5 11 9 10 11 7 12 10 14 12 13 15 11 11 9 14 8 8 5 14 7 14 7 8 4 8 3 7 4 3 12 9 9 14 10 355
(Foreign) GBX UNITED KINGDOM 0 2 2 6 11 7 6 2 6 7 6 5 5 8 7 5 4 3 5 2 12 6 7 4 8 6 5 3 6 6 2 0 2 3 2 2 1 1 6 1 3 2 187
(Foreign) FRX FRANCE 2 2 6 12 12 4 1 1 1 3 5 5 4 5 6 6 3 4 7 3 6 6 1 1 1 0 3 2 2 3 3 1 0 2 3 2 2 1 4 1 3 3 142
(Foreign) CAX CANADA 0 2 2 1 0 2 2 3 3 1 1 5 4 5 2 3 2 1 1 3 0 2 3 2 2 6 2 2 0 4 2 1 6 4 5 2 4 4 5 1 4 7 111
(Foreign) CHX SWITZERLAND 1 1 1 2 3 1 1 0 6 1 2 6 1 2 4 1 2 2 7 2 0 3 8 1 2 2 0 1 1 3 1 2 4 2 1 1 1 2 3 3 2 0 89
(Foreign) SEX SWEDEN 2 2 1 2 0 5 1 1 1 3 3 2 2 4 2 3 1 1 3 2 1 3 1 2 2 1 0 1 0 0 1 1 2 1 0 0 1 4 0 2 1 0 65
(Foreign) TWX TAIWAN 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 4 3 1 4 2 0 0 0 2 4 4 5 10 8 2 4 56
(Foreign) ITX ITALY 0 1 0 0 1 0 0 1 1 4 3 1 1 3 0 1 1 3 0 3 2 3 0 1 0 2 0 2 2 0 1 1 1 0 0 0 1 1 1 0 0 1 43
(Foreign) AUX AUSTRALIA 0 0 1 0 0 0 0 0 0 0 0 1 1 1 3 1 0 0 0 2 0 2 1 4 0 0 1 1 1 0 1 1 0 2 1 2 1 3 2 4 2 2 41
(Foreign) NLX NETHERLANDS 0 0 3 1 1 3 0 1 0 1 0 3 0 1 2 0 0 1 3 1 2 1 2 3 1 1 0 1 0 0 0 0 0 1 1 0 1 0 1 4 1 0 41
(Foreign) SUX U.S.S.R. 0 0 0 0 1 0 0 1 0 0 2 4 1 1 5 1 3 9 1 1 0 2 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 33
(Foreign) BEX BELGIUM 1 0 0 0 1 0 1 0 0 0 1 1 0 0 1 1 1 1 1 1 2 1 2 1 1 0 1 0 0 1 0 1 0 1 0 0 0 0 3 0 0 1 26
(Foreign) ATX AUSTRIA 2 1 0 0 1 1 1 0 1 2 1 0 1 0 1 1 0 1 0 0 0 0 0 2 0 0 0 0 1 0 0 1 1 0 0 0 1 0 1 0 1 0 22
(Foreign) HUX HUNGARY 0 1 0 0 0 2 1 1 2 0 1 1 1 0 1 0 0 1 1 1 0 0 2 0 0 1 1 1 0 1 0 1 1 0 0 0 0 0 0 0 0 0 22
(Foreign) FIX FINLAND 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 2 0 2 0 0 0 0 1 1 0 1 0 2 0 0 0 1 1 2 0 0 0 1 0 0 0 0 17
(Foreign) KRX SOUTH KOREA 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 1 0 0 0 1 1 2 2 0 0 2 0 2 15
(Foreign) ZAX SOUTH AFRICA 0 0 0 0 0 0 0 1 0 0 1 0 0 2 1 1 0 0 1 0 0 0 0 0 0 2 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 12
(Foreign) ESX SPAIN 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 1 1 0 9
(Foreign) DKX DENMARK 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 0 1 1 8
(Foreign) BRX BRAZIL 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 1 1 1 0 0 0 0 0 0 0 0 7
(Foreign) CSX CZECHOSLOVAKIA 0 0 0 0 0 0 2 0 1 0 0 2 0 1 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 7
(Foreign) IEX IRELAND 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 1 0 0 0 0 1 0 1 2 0 0 0 0 0 0 7
(Foreign) NOX NORWAY 0 0 0 0 0 0 0 0 1 0 1 0 0 1 1 0 0 0 2 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 7
(Foreign) PLX POLAND 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 2 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
(Foreign) ARX ARGENTINA 0 0 0 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 2 0 0 0 0 0 0 0 0 0 0 2 0 6
(Foreign) ILX ISRAEL 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 1 0 0 1 0 0 0 1 0 5
(Foreign) MXX MEXICO 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 1 0 0 2 0 0 0 0 0 0 0 0 5
(Foreign) CNX CHINA P.REP. 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 0 2 1 1 0 0 4
(Foreign) HKX CHINA,HONG KONG S.A.R. 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 0 0 0 0 0 0 0 0 0 0 0 0 1 1 4
(Foreign) NZX NEW ZEALAND 0 0 0 0 0 0 0 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 0 0 0 0 0 0 1 0 1 4
(Foreign) UAX UKRAINE 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 2 0 0 1 0 1 0 0 0 4
(Foreign) VEX VENEZUELA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 3
(Foreign) BGX BULGARIA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 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 2
(Foreign) ISX ICELAND 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 0 0 1 0 0 1 2
(Foreign) ROX ROMANIA 0 0 0 0 0 0 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 0 0 0 0 0 0 0 2
(Foreign) RUX RUSSIAN FEDERATION 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 1 0 0 0 0 0 1 0 2
(Foreign) INX INDIA 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 0 0 0 0 1 0 1
(Foreign) KWX KUWAIT 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 0 0 0 1 0 0 1
(Foreign) PHX PHILIPPINES 0 0 0 0 0 0 0 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 0 0 0 0 0 0 0 0 0 0 1
(Foreign) PTX PORTUGAL 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 1 0 0 0 0 0 0 0 1
(Foreign)   -- Subtotal -- 9 15 21 30 40 29 25 22 44 42 50 68 53 62 71 73 55 69 84 57 55 80 67 48 35 50 41 36 35 36 31 26 37 37 41 34 41 49 64 66 51 52 1931
(ALL) ALL All Regions, U.S. and Foreign 94 93 144 199 189 129 84 90 140 127 179 193 166 158 157 151 122 159 180 116 107 146 131 88 86 93 100 102 98 98 86 67 75 99 91 86 111 119 136 129 124 121 5163


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Office of Electronic Information Products - PTMD
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