| COMTECH 1787334 · TMA997606 | COMPRESSION TECHNOLOGY CORPORATION | 4 Oils35 Advertising37 Construction+2 | Registered | 2018 |
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| COMTECH 2274105 · design | Comtech Telecommunications Corp. | 9 Electronics35 Advertising38 Telecommunications+1 | Pending | 2023 |
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| CIMTECH 2224844 | CIMtech Mfg. Inc. | 9 Electronics40 Treatment42 Science | Pending | 2022 |
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| CAMTECT 2128779 | CAMTECT INC. | 9 Electronics35 Advertising | Pending | 2021 |
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| CIMTEC 1653360 · TMA893440 · design | Centre for Imaging Technology Commercialization | 9 Electronics10 Medical35 Advertising+3 | Registered | 2015 |
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| COMTEC 1985153 | 102045458 Saskatchewan Inc. | 6 Metal7 Machines19 Building+1 | Pending | 2019 |
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| CIMETECH 2256049 · TMA1237812 | Groupe Gestion Onsteel Inc. | 37 Construction42 Science | Registered | 2024 |
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| CHEMTECH 1653315 · TMA953414 | CHAUSSURES RÉGENCE INC. | 24 Textiles | Registered | 2016 |
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| COMETECH 2274098 | Comtech Telecommunications Corp. | 9 Electronics35 Advertising38 Telecommunications+1 | Pending | 2023 |
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| cimetech 2199789 | Shenzhen Chunqiu Electronic Technology Co. Ltd. | 9 Electronics11 Lighting | Pending | 2022 |
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| CONTECH 1806549 · TMA1012240 | an individual | 37 Construction | Registered | 2019 |
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| CANTECH 1760854 · TMA980170 · design | INTERTAPE POLYMER INC. | 16 Paper17 Rubber22 Ropes+1 | Registered | 2017 |
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| CONTACK 1628926 · TMA908471 | GESTION IMMOBILIÈRE GT INC. | 19 Building | Registered | 2015 |
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| CHEMTEC 1518354 · TMA872480 | an individual | 7 Machines11 Lighting12 Vehicles+2 | Registered | 2014 |
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| COMOTEC 1358428 · TMA780004 | an individual | 9 Electronics14 Jewellery42 Science | Registered | 2010 |
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| CIMATEC 1109859 · TMA638928 | InnerEco Environmental Inc. | 11 Lighting | Registered | 2005 |
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| CENTECH 0907775 | ÉCOLE DE TECHNOLOGIE SUPÉRIEURÉ | All goods and services | Protected | 1996 |
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| CIMTEST 0837389 · TMA487210 | Cimtek Inc. | 9 Electronics | Registered | 1997 |
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| CYNTECH 0828494 · TMA499952 | Cyntech Tanks Ltd. | 6 Metal17 Rubber22 Ropes+2 | Registered | 1998 |
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| CYNTECH 0828493 · TMA499950 · design | Cyntech Tanks Ltd. | 6 Metal17 Rubber22 Ropes+2 | Registered | 1998 |
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| CANTECH 0319641 · TMA173999 | INTERTAPE POLYMER INC. | 5 Pharmaceuticals8 Hand17 Rubber+1 | Registered | 1971 |
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| CEMOTOCN 2214353 · TMA1244390 | CEMOTO LTD | 12 Vehicles | Registered | 2024 |
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| CanaTech 2185774 · TMA1231507 | GTA Sign Depot Inc | 7 Machines | Registered | 2024 |
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| coomatec 2093031 · TMA1172441 | Shenzhen Abilee Technology Co. Ltd. | 10 Medical | Registered | 2023 |
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| CINtec 2042786 · TMA1107581 | Roche Diagnostics GmbH | 5 Pharmaceuticals42 Science | Registered | 2021 |
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