Description: 270 / (53) To A Stack (84) With Stack Forming or Shaping (88) With Vibration or Reciprocation of Stack With or Without Air blast
Hierarchy/Derived subclasses
CIPO search
search just 270/88This will show what classes derive from the input. Ex: entering 78/35 shows the derived classes and the search that can be used to find
patents in those subclasses.