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Dynamic Classification Remove ones with little bearings and add ones with more relevancies.
Look inside of your search result by breaking down the result based on United Patent Classification (UPC) or International Patent Classifcation(IPC)hierarchy.

: Easy selection from the hierarchy to zero in on your searching objectives. : Easy expansion for further searching by picking up previously unidentified key words found from UPC or IPC description. : Easy expansion for further searching by picking up previously unidentified UPCs or IPCs found from the list.
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