Synthetic resins or natural rubbers -- part of the class 520 series

Class / Patent application number	Description	Number of patent applications / Date published
524000000	SYNTHETIC RESINS (CLASS 520, SUBCLASS 1)	11636

Patent applications in class Synthetic resins or natural rubbers -- part of the class 520 series

Patent applications in all subclasses Synthetic resins or natural rubbers -- part of the class 520 series