For a Utility document, enter the CPC Subclass designation in the Subclass entry box, enter the main group (before the slash) in the first Subgroup entry box and the subgroup (after the slash) in the second Subgroup entry box, then click on the Go button image button.

For a Design or Plant document, enter the US Class designation in the Class entry box and the Subclass number in the Subclass entry box, then click on the Go button image button.

Note:
    You must enter a CPC Subclass designation for Utility documents, but a CPC Subgroup designation is optional. You must enter a USPC Class designation for Design or Plant documents, but a USPC Subclass designation is optional.