{
 "endpoint": "/api/v1/nber_subcategory/",
 "data_version": "20261027.2",
 "as_of": "2026-10-27",
 "routes": [
  "/api/v1/nber_subcategory/",
  "/api/v1/nber_subcategory/{pk}/"
 ],
 "aliases": [],
 "response_key": "nber_subcategories",
 "default_f": [
  "nber_subcategory_id",
  "nber_subcategory_title",
  "nber_category_id"
 ],
 "default_s": [
  {
   "nber_subcategory_id": "asc"
  }
 ],
 "default_o": {},
 "sortable_fields": [],
 "nested_groups": [],
 "q_required": false,
 "detail_key": "nber_subcategory_id",
 "in_this_build": false,
 "fields": [
  {
   "name": "nber_subcategory_id",
   "type": "string",
   "kind": "returned, not searchable"
  },
  {
   "name": "nber_subcategory_title",
   "type": "string",
   "kind": "returned, not searchable"
  },
  {
   "name": "nber_subcategory_num_patents",
   "type": "integer",
   "kind": "returned, not searchable"
  },
  {
   "name": "nber_subcategory_num_assignees",
   "type": "integer",
   "kind": "returned, not searchable"
  },
  {
   "name": "nber_subcategory_num_inventors",
   "type": "integer",
   "kind": "returned, not searchable"
  },
  {
   "name": "nber_subcategory_first_seen_date",
   "type": "string",
   "kind": "returned, not searchable"
  },
  {
   "name": "nber_subcategory_last_seen_date",
   "type": "string",
   "kind": "returned, not searchable"
  },
  {
   "name": "nber_subcategory_years_active",
   "type": "integer",
   "kind": "returned, not searchable"
  },
  {
   "name": "nber_category",
   "type": "string (URL)",
   "kind": "returned, not searchable",
   "note": "Link to the detail record: https://patentref.io/api/v1/nber_category/<id>/, with a \"/\" in the id written \":\"; null when the id is null. Kind: none: the index has no search field for it, so a query on it matches nothing, as upstream; query the id field of the group instead. It comes back beside that id: f naming the id field or the whole group returns both, and f naming this link alone returns nothing."
  }
 ],
 "operation_id": "NBERSubCategoryList"
}