[問題] 請問美國國家專利
各位前輩大家好,
小妹在進行專利檢索時遇到了一些問題,
想請問各位經驗豐富的前輩解答:)
將美國與IPC做交集時,為什麼只
出現2006年之後的專利呢?
ex:acn/us and icl/(G02F1$ or G11B7$ or G06F3$)
但是若台灣與IPC做交集,則可以出現2006之後的資料?
ex:acn/tw and icl/(G02F1$ or G11B7$ or G06F3$)
在此,非常謝謝學識淵博的前輩
感激不盡:)
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