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Topic Mining and Application Analysis of Invalid Patent: A Case Study of Invalid Patent on Lens from 2007 to 2016
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Information studies: Theory & Application
››
2017, Vol. 40
››
Issue (12)
: 128-133.
DOI:
10.16353/j.cnki.1000-7490.2017.12.023
Topic Mining and Application Analysis of Invalid Patent: A Case Study of Invalid Patent on Lens from 2007 to 2016
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Published
2017-12-20
Issue Date
2017-12-25
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