USPC Class Details

Description: D20 sales and advertising equipment / d20 sales and advertising equipment/(10) signs or display forms

Hierarchy/Derived subclasses

D20 / 10-> 11
 -> 12-> 4
 -> 13-> 14
 -> 15
 -> 16
 -> 17
 -> 18-> 5
 -> 19-> 20
 -> 21
 -> 22-> 6-> 23-> 24-> 25
    -> 26
   -> 27
   -> 28
 -> 29-> 30-> 31-> 7-> 32-> 33
  -> 34
  -> 35
  -> 36
  -> 37
  -> 38
 -> 39
 -> 40-> 8
 -> 41-> 9
 -> 42
 -> 43-> 44

uspto searches

Patent Apps in D20/10

Granted Patents in D20/10

Use the links above or do an advanced search in ppubs for:
(D20/10.ccls. or D20/11.ccls. or D20/12.ccls. or D20/4.ccls. or D20/13.ccls. or D20/14.ccls. or D20/15.ccls. or D20/16.ccls. or D20/17.ccls. or D20/18.ccls. or D20/5.ccls. or D20/19.ccls. or D20/20.ccls. or D20/21.ccls. or D20/22.ccls. or D20/6.ccls. or D20/23.ccls. or D20/24.ccls. or D20/25.ccls. or D20/26.ccls. or D20/27.ccls. or D20/28.ccls. or D20/29.ccls. or D20/30.ccls. or D20/31.ccls. or D20/7.ccls. or D20/32.ccls. or D20/33.ccls. or D20/34.ccls. or D20/35.ccls. or D20/36.ccls. or D20/37.ccls. or D20/38.ccls. or D20/39.ccls. or D20/40.ccls. or D20/8.ccls. or D20/41.ccls. or D20/9.ccls. or D20/42.ccls. or D20/43.ccls. or D20/44.ccls.)

At about 35 search terms the uspto will give you this error "Too many search terms" The 35th term is bold.

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.
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