| Patent Number |
Title Of Patent |
Date Issued |
| 4689059 |
Cleaner apparatus for toxic or hazardous substances |
August 25, 1987 |
| The present invention relates to an apparatus for cleaning hazardous or toxic solid and liquid substances. The apparatus generally comprises a vacuum cleaner having a housing and an arrangement for drawing a fluid flow from an inlet to an outlet of the housing. A first filter is provided |
| 4650505 |
Cleaner apparatus for toxic or hazardous substances |
March 17, 1987 |
| The present invention relates to an apparatus for cleaning hazardous or toxic solid and liquid substances. The apparatus generally comprises a vacuum cleaner having a housing and an arrangement for drawing a fluid flow from an inlet to an outlet of the housing. A first filter is provided |
| 3943597 |
Vacuum cleaner |
March 16, 1976 |
| A vacuum cleaner has a casing with an internal duct connecting the air outlet of the vacuum cleaner fan with a discharge aperture. The casing has one or more primary apertures formed in its wall and communicating through the interior of the casing with one or more secondary apertures in |
