Description: 122 / (109) Fluid Treatment And Handling (127) External Boiler Circuit

Hierarchy/Derived subclasses

122 / 109-> 127-> 128-> 129-> 130
    -> 131
    -> 132
    -> 133
  -> 134-> 135
   -> 136-> 137-> 138
    -> 139
    -> 140-> 141
   -> 142

CIPO searches

search just 122/127

- or -

search hierarchy!

The "search hierarchy!" link will execute this search:
((122/127 <IN> CPC) <OR> (122/128 <IN> CPC) <OR> (122/129 <IN> CPC) <OR> (122/130 <IN> CPC) <OR> (122/131 <IN> CPC) <OR> (122/132 <IN> CPC) <OR> (122/133 <IN> CPC) <OR> (122/134 <IN> CPC) <OR> (122/135 <IN> CPC) <OR> (122/136 <IN> CPC) <OR> (122/137 <IN> CPC) <OR> (122/138 <IN> CPC) <OR> (122/139 <IN> CPC) <OR> (122/140 <IN> CPC) <OR> (122/141 <IN> CPC) <OR> (122/142 <IN> CPC))

This 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.
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