The Analysis to Influencing Factors on the Technological Innovation Based on the Patent Maintenance Time
2016 ◽
pp. 11-18
Keyword(s):
2016 ◽
Vol 111
◽
pp. 275-284
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2020 ◽
pp. 002072092094060
2021 ◽
Vol 0
(0)
◽
pp. 1-22