| CONCAST 0886987 · TMA530257 | A Cubed Corporation (a Pennsylvania corporation) | 6 Metal | Registered | 2000 |
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| COMCAST 1816276 · TMA1031073 | Comcast Corporation | 38 Telecommunications41 Education | Registered | 2019 |
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| COMCAST 1816271 · TMA1011311 | Comcast Corporation | 9 Electronics35 Advertising38 Telecommunications+2 | Registered | 2018 |
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| COMCAST 1813330 · TMA1011313 | Comcast Corporation | 37 Construction38 Telecommunications41 Education | Registered | 2018 |
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| CANACASH 1471474 · TMA798107 | Canacash Financial Services Ltd | 9 Electronics16 Paper35 Advertising+1 | Registered | 2011 |
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| COMCAST 1362798 · TMA730645 | Comcast Corporation | 38 Telecommunications41 Education | Registered | 2008 |
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| COMCAST 0713442 · TMA433365 | COMALCO ALUMINIUM LIMITED | 19 Building | Registered | 1994 |
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| CINECAST 2042069 | an individual | 9 Electronics41 Education42 Science | Pending | 2020 |
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| CANNACASE 2094791 · TMA1172511 | an individual | 34 Tobacco | Registered | 2023 |
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| CONQUEST 1924235 · TMA1110719 | vAuto, Inc. | 35 Advertising42 Science | Registered | 2021 |
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| CONCISE 1867843 · TMA1057758 | Fine Agrochemicals Limited, CORPORATION UNITED KINGDOM | 1 Chemicals | Registered | 2019 |
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| CONQUEST 1806084 · TMA1054171 | SHIMANO INC. | 28 Toys | Registered | 2019 |
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| CAMOCAST 1718348 · TMA992858 | JOSTENS, INC. | 14 Jewellery | Registered | 2018 |
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| CONCOSTS 1650034 · TMA948208 | K Weber Consulting Inc. | 35 Advertising36 Finance37 Construction+2 | Registered | 2016 |
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| CONCOSTS 1650033 · TMA948195 · design | K Weber Consulting Inc. | 35 Advertising36 Finance37 Construction+2 | Registered | 2016 |
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| COINCASA 1430710 · TMA841848 · design | an individual | 8 Hand11 Lighting16 Paper+7 | Registered | 2013 |
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| CONCACAF 1430115 · TMA791401 | The Confederation of North, Central American and Caribbean Association Football (CONCACAF) | 38 Telecommunications41 Education | Registered | 2011 |
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| CONCHAS 1311906 · TMA696202 | Owner not shown | 30 Coffee | Registered | 2007 |
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| CONQUEST 1299387 · TMA696013 | C.R. BARD, INC. A LEGAL ENTITY | 10 Medical | Registered | 2007 |
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| CONQUEST 1296005 · TMA691244 | Graphic Packaging International Canada, ULC | 16 Paper | Registered | 2007 |
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| CONQUEST 1119751 · TMA618173 | Cook Medical Technologies LLC | 10 Medical | Registered | 2004 |
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| Conquest 1093744 · TMA584376 | an individual | 9 Electronics | Registered | 2003 |
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| CONQUEST 1084110 · TMA596530 | SENSORS & SOFTWARE INC. | 6 Metal9 Electronics | Registered | 2003 |
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| CONQUEST 1028439 · TMA544891 | THE GOODYEAR TIRE & RUBBER COMPANY (AN OHIO CORPORATION) | 7 Machines | Registered | 2001 |
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| CONCISE 1009999 · TMA574912 | Hair Club for Men, Ltd., Inc. | 3 Cosmetics26 Sewing | Registered | 2003 |
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