Wet/dry vacuum machine
US4894881A · kind A · utility
27Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1989 |
| Grant date | Jan 23, 1990 |
| Priority date | — |
| Expiry date | Mar 3, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47L9/00
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A vacuum machine for collecting hazardous materials is adapted for wet or dry applications without diminishing the storage capacity of the reservoir.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.