* '''IPCR_SUBCLASS'''
** XML 4.1, 4.2, 4.3, 4.4 and 4.5 , only for plant, reissue, and utility types
*** <code>//us-bibliographic-data-grant/classifications-ipcr/classification-ipcr/section</code> + <code>//us-bibliographic-data-grant/classifications-ipcr/classification-ipcr/class</code> + <code>//us-bibliographic-data-grant/classifications-ipcr/classification-ipcr/subclass</code>
***example: C
* '''IPCR_MAIN_GROUP'''
** XML 4.1, 4.2, 4.3, 4.4 and 4.5 , only for plant, reissue, and utility types
*** <code>//us-bibliographic-data-grant/classifications-ipcr/classification-ipcr/main-group</code>
***example: 11
* '''IPCR_SUB_GROUP'''
** XML 4.1, 4.2, 4.3, 4.4 and 4.5 , only for plant, reissue, and utility typetypes
*** <code>//us-bibliographic-data-grant/classifications-ipcr/classification-ipcr/subgroup</code>
***example: 00