| OPTI 2215682 · TMA1233972 | IDEXX LABORATORIES, INC. | 1 Chemicals5 Pharmaceuticals | Registered | 2024 |
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| OBT 2011733 · TMA1134853 | Alexza Pharmaceuticals, Inc. | 5 Pharmaceuticals10 Medical | Registered | 2022 |
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| OPTI 1940635 · TMA1140842 | OptiRTC, Inc. | 36 Finance42 Science | Registered | 2022 |
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| OPTI 1880249 · TMA1072552 | an individual | 25 Clothing28 Toys | Registered | 2020 |
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| OPTI 1174411 · TMA657369 | Optimize Technologies, Inc. an Oregon corporation | 9 Electronics | Registered | 2006 |
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| OPTI 1123880 · TMA611197 · design | OPTIKINETICS LTD. | 6 Metal9 Electronics10 Medical+4 | Registered | 2004 |
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| OPTI 0715732 · TMA434684 | Wisconsin Knife Works (a Wisconsin corporation) | 7 Machines | Registered | 1994 |
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| OPTI 0348161 · TMA186164 | J. & P. Coats, Limited | 7 Machines26 Sewing | Registered | 1972 |
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| OPTI 2137272 | Industrial Magnetics, Inc. | 9 Electronics | Pending | 2021 |
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| OPTIO 2227628 · TMA1255047 | BASF Agricultural Solutions Seed US LLC | 1 Chemicals31 Fresh | Registered | 2024 |
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| OPTIA 1938677 · TMA1125418 | Infastech Intellectual Properties Pte. Ltd. | 6 Metal | Registered | 2022 |
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| OPTIE 0828052 · TMA496718 · design | O.K. TIRE STORES INC. | 35 Advertising37 Construction | Registered | 1998 |
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| OPTIE 0814498 · TMA475418 | O.K. TIRE STORES INC. | 35 Advertising37 Construction | Registered | 1997 |
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| Oufti 2021292 | an individual | 30 Coffee | Pending | 2020 |
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| OBAT 2165546 · TMA1231213 | Owner not shown | 9 Electronics35 Advertising42 Science | Registered | 2024 |
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| OPTO 2111588 · TMA1159462 | Berkeley Lights, Inc. | 1 Chemicals | Registered | 2023 |
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| OVATIO 2084056 · TMA1215986 | an individual | 4 Oils7 Machines17 Rubber | Registered | 2023 |
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| OVATIO 2084054 · TMA1215985 · design | an individual | 4 Oils7 Machines17 Rubber | Registered | 2023 |
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| OptiO2 2057680 · TMA1187107 | Fisher & Paykel Healthcare Limited | 10 Medical | Registered | 2023 |
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| OphtAI 1996876 · TMA1216728 | Owner not shown | 9 Electronics10 Medical42 Science+1 | Registered | 2024 |
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| OPT+ 1784179 · TMA971719 | CASH MONEY CHEQUE CASHING INC. | 9 Electronics16 Paper35 Advertising+1 | Registered | 2017 |
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| OPT + 1784178 · TMA983186 · design | CASH MONEY CHEQUE CASHING INC. | 9 Electronics16 Paper35 Advertising+1 | Registered | 2017 |
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| OPT4 1549802 · TMA848961 | KRUEGER INTERNATIONAL, INC. | 20 Furniture | Registered | 2013 |
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| OBOD 1476474 · TMA803742 | YSI Incorporated | 9 Electronics | Registered | 2011 |
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| OPT 0775229 · TMA457105 | an individual | 14 Jewellery36 Finance | Registered | 1996 |
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