| US3599272A (en)* | 1970-01-15 | 1971-08-17 | John T Merrick | Vacuum mop |
| USD254788S (en)* | 1977-10-05 | 1980-04-22 | Nauta Jelle G | Liquid dispensing vacuum cleaner |
| USD258132S (en)* | 1978-04-25 | 1981-02-03 | Trewax Company | Carpet cleaning machine |
| USD257774S (en)* | 1978-06-07 | 1981-01-06 | Pierson Donald F | Carpet and rug cleaner |
| USD274851S (en)* | 1981-06-01 | 1984-07-24 | Mark Schmitz | Carpet cleaning machine |
| USD281632S (en)* | 1983-03-24 | 1985-12-03 | Jack Yang | Power washer |
| USD293950S (en)* | 1985-02-01 | 1988-01-26 | Rug Doctor, Inc. | Portable machine for wet or dry vacuum extraction |
| USD302613S (en)* | 1986-09-26 | 1989-08-01 | U.S. Products, Inc. | Portable cleaning machine for carpets, draperies and upholstery |
| US4941230A (en)* | 1987-06-29 | 1990-07-17 | Lamore Patrick H | Portable tacking system |
| USD316447S (en)* | 1989-09-19 | 1991-04-23 | Critical Industries, Inc. | Negative pressure air filtration housing |
| US5089037A (en)* | 1991-05-28 | 1992-02-18 | Marsolais Guy H | Industrial vacuum cleaning apparatus |
| USD403476S (en)* | 1997-01-17 | 1998-12-29 | Aktiebolaget Electrolux | Vacuum cleaner |
| US6521051B1 (en)* | 2000-04-06 | 2003-02-18 | U.S. Liquids, Inc. | Portable vacuum storage unit and method for use |
| USD482828S1 (en)* | 2002-07-29 | 2003-11-25 | Media Blast & Abrasives, Inc. | Abrasive media separator |
| USD482827S1 (en)* | 2002-07-29 | 2003-11-25 | Media Blast & Abrasives, Inc. | Abrasive media dust collector |
| KR100509012B1 (en)* | 2002-12-13 | 2005-08-19 | 조인섭 | Dispersal air scrubber and method thereof |
| US7506403B2 (en)* | 2004-03-08 | 2009-03-24 | The Toro Company | Blower/vac debris collection system with collection bag on movable wheeled cart |
| USD563064S1 (en)* | 2006-03-09 | 2008-02-26 | Romeo H Vezina | Vacuum cleaner |
| USD638179S1 (en)* | 2009-08-31 | 2011-05-17 | Witter Robert M | Auxiliary cyclonic dust collector |
| US20130074460A1 (en)* | 2011-09-26 | 2013-03-28 | Satoshi Sakuragi | Dust collector |
| CA145256S (en)* | 2012-02-13 | 2013-03-28 | Rentschler Reven Lueftungssysteme Gmbh | Air cleaner |
| USD685402S1 (en)* | 2013-01-11 | 2013-07-02 | Louis W. Cappuccio | Power saw dust collector |
| USD740501S1 (en)* | 2013-04-04 | 2015-10-06 | Kächer North America, Inc. | Pressure washer |
| USD815375S1 (en)* | 2016-02-25 | 2018-04-10 | San Ford Machinery Co., Ltd. | Dust collector |
| CH713848B1 (en)* | 2017-06-01 | 2021-01-15 | Boneco Ag | Air washer. |
| USD912339S1 (en)* | 2018-03-22 | 2021-03-02 | P-Laser N.V. | Laser cleaning device |
| CA3116593A1 (en)* | 2018-10-22 | 2020-04-30 | Omachron Intellectual Property Inc. | Air treatment apparatus |
| US11266938B2 (en)* | 2019-10-07 | 2022-03-08 | San Ford Machinery Co., Ltd. | Assembled air cleaner |
| EP3812028B1 (en)* | 2019-10-23 | 2022-05-04 | Rvt Group Limited | Dust extraction unit |
| CA218564S (en)* | 2020-11-12 | 2023-02-03 | Rvt Group Ltd | Dust extractor |
| USD1008585S1 (en)* | 2022-06-23 | 2023-12-19 | San Ford Machinery Co., Ltd. | Upright dust collector |