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Using PATENTSCOPE you can search 73 million patent documents including 3.5 million published international patent applications (PCT). Detailed coverage information can be found here
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The entered value is searched against
the Title, Abstract, Numbers and Names.
"electric car"~50
Smith or Klein
WO2010000001
EP2012001709
"sol* panel"~5
elect?icit?
electric^10 and car^3

PCT Publication 50/2018 (13.12.2018) is now available. The next publication date is scheduled as follows: Gazette number 51/2018 (20.12.2018). More