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| Number | Title | Issue Date |
| 7967914 | Method and apparatus for cleaning fabrics, floor coverings, and bare floor surfaces utilizing a soil transfer medium An apparatus and method for cleaning fabrics, floor coverings, and bare floor surfaces utilizing a soil transfer cleaning medium is disclosed. A method of mechanically removing soil from a surface intended to be cleaned includes the steps of successively and repeate... | 06/28/2011 |
| 7272870 | Secondary introduction of fluid into vacuum system An apparatus and method for minimizing the accumulation of soil and debris within a vacuum system of a surface maintenance machine is disclosed. A secondary fluid, such as pressurized cleaning solution, is sprayed into the vacuum system in order to reduce soil and d... | 09/25/2007 |
| 6735812 | Dual mode carpet cleaning apparatus utilizing an extraction device and a soil transfer cleaning medium An apparatus performing multiple different cleaning operations for cleaning fabrics, floor coverings, and bare floor surfaces is disclosed. A device according to the present invention selectively utilizes soil transfer and solution extraction technology. In one embo... | 05/18/2004 |
