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i'd like to check is this patent (6488034 File, particularly nail file ) still valid? was it renewed? tnx Sharon Katz

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If you look it up in google/patents and scroll to the bottom of the page you will see that the 12 year maintenance payment has been paid. It looks like it will expire in 2018. You can find it at google patents by clicking on this page on the right hand column. It says "View patent us6488034". –  George White Jun 2 '14 at 18:01

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