| China Patent Information Research System | Search Counter£º |
|
Search formula for Keyword is to input in the Line K. Keywords are extracted from the title and the abstract. Format: Keyword is composed of one or more word(s) linked by boolean oerpator. For Example: "CAR WHEEL" or "CAR*WHEEL". If any two words are seperated by space, they are deemed as to be ANDed. For a complicated search in which more than one word is involved, boolean operators, "+', "*", "-", "(" and ")" can be used.
If search in this entry is carried out successfully, the hits will be shown at the most right column of this line, otherwise the error message will be shown instead. |
|
|
|
|