USPC Class Details

Description: D28 cosmetic products and toilet articles / d28 cosmetic products and toilet articles/(9) toilet articles and beauty parlor equipment not elsewhere specified (10) hair device not elsewhere specified (14) (20) washing, dyeing or fluid treatment (4)

Hierarchy/Derived subclasses

D28 / 9-> 10-> 14-> 20-> 4

uspto searches

Patent Apps in D28/20

Granted Patents in D28/20

Advanced search in patft or appft for the hierarchy would be:
(ccl/D28/20 or ccl/D28/4)

Press the Search button below to send the query to the USPTO site. (Granted patents search)

This will show what classes derive from the input. Ex: entering 43/42.24 shows the derived classes and the search that can be used to find patents or patent applications in those subclasses.