{
  "$type": "site.standard.document",
  "description": "A tractor includes a protective frame including a lower frame and an upper frame rotatably coupled with an upper portion of the lower frame, and an assist mechanism to assists a rotation of the upper frame.",
  "path": "/patents/1306373",
  "publishedAt": "2021-12-16T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B60R21/131",
    "KUBOTA CORPORATION"
  ],
  "textContent": "A tractor includes a protective frame including a lower frame and an upper frame rotatably coupled with an upper portion of the lower frame, and an assist mechanism to assists a rotation of the upper frame.",
  "title": "WORK VEHICLE"
}