| 1914 | Our first president, Sugao Soga, registered as Patent Attorney |  |
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| 1948 | Michiteru Soga registered as Patent Attorney |
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| 1960 | After the passing of Sugao Soga, Michiteru Soga became our second president |  |
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| 1993 | Michiharu ‘Hal’ Soga registered as Patent Attorney |
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| 2007 | After the passing of Michiteru Soga, Michiharu Soga became our third president |  |
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| 2014 | S. Soga and Co. Celebrated 100 years of business |
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