{
  "$type": "site.standard.document",
  "description": "Air filters, and air filter devices for use in helicopters, and methods of use, are disclosed.",
  "path": "/patents/1288818",
  "publishedAt": "2021-04-29T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "B01D46/0031",
    "Pall Corporation"
  ],
  "textContent": "Air filters, and air filter devices for use in helicopters, and methods of use, are disclosed.",
  "title": "AIR FILTER AND METHOD OF USE"
}