{
  "$type": "site.standard.document",
  "description": "An apparatus (10) for cleaning a surface includes a liquid delivery system (12) for storing cleaning liquid and delivering the cleaning liquid to the surface to be cleaned, a fluid recovery system (14) and a control system. The control system includes a controller (122) that is coupled to a fluid…",
  "path": "/patents/1391860",
  "publishedAt": "2026-03-18T00:00:00.000Z",
  "site": "at://did:plc:oql6ds5vnff4ugar6rruliwd/site.standard.publication/3mn3ohu7oxx5w",
  "tags": [
    "A46B17/06",
    "BISSELL INC [US]"
  ],
  "textContent": "An apparatus (10) for cleaning a surface includes a liquid delivery system (12) for storing cleaning liquid and delivering the cleaning liquid to the surface to be cleaned, a fluid recovery system (14) and a control system. The control system includes a controller (122) that is coupled to a fluid level sensing assembly (98). Methods of operating the same include sensing foam or liquid with the fluid level sensing assembly (98).",
  "title": "APPARATUS FOR CLEANING A SURFACE"
}