請問如何確認某個美國專利是否還有效? - 專利

By Elma
at 2012-07-27T15:04
at 2012-07-27T15:04
Table of Contents
我是初學者
請問版上各位大大
請問我要去哪裡查詢某個美國專利是否還有效或者已經失效了呢?
請問要在美國專利網站哪裡查詢呢?或者用Delphion是否可以查到此資訊?
謝謝各位大大
--
請問版上各位大大
請問我要去哪裡查詢某個美國專利是否還有效或者已經失效了呢?
請問要在美國專利網站哪裡查詢呢?或者用Delphion是否可以查到此資訊?
謝謝各位大大
--
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專利
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