* child_doc_country (varchar(255)) country of origin of the child application
====PLANTDESIGN====
=====Fields=====
* length_of_grant (int) length of grant, most likely in years
* edition (varchar(255)) possibly the edition of the Classification Locarno which determined main_classification
* main_classification (varchar(255)) classification for what type of design the patent is for
==Connecting Patent database and Assignment database==