日前三個專利權已經向 USPTO(美國專利局) 申請,分別是US 5,006,072 / US 4,978,300 / US 4,887,967
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日前三個專利權已經向 USPTO(美國專利局) 申請,分別是US 5,006,072 / US 4,978,300 / US 4,887,967
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