Issued Patents All Time
Showing 26–50 of 69 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D623813 | Vacuum cleaner | John Griffin | 2010-09-14 |
| D618409 | Vacuum cleaner | Robert L. Crevling, Jr., John Griffin | 2010-06-22 |
| 7721384 | Pneumatic cleaner | Robert L. Crevling, Jr., Matthew Scott Kepner | 2010-05-25 |
| D615718 | Vacuum cleaner | Robert L. Crevling, Jr., John Griffin | 2010-05-11 |
| D599968 | Vacuum cleaner | Robert L. Crevling, Jr., John Griffin | 2009-09-08 |
| 7549191 | Gutter cleaning blower vacuum attachment apparatus | Cory F. Girton | 2009-06-23 |
| 7308729 | Vacuum nozzle head with integral squeegee | Robert L. Crevling, Jr. | 2007-12-18 |
| D537583 | Backpack cleaner | Robert L. Crevling, Jr., John Griffin | 2007-02-27 |
| 7033259 | Hand sander vacuum attachment | Randy L. Buss, Matthew Scott Kepner | 2006-04-25 |
| D473024 | Blower | John Griffin, Robert L. Crevling, Jr. | 2003-04-08 |
| 6530116 | Vacuum cleaner with muffled detachable blower exhaust | Robert C. Berfield, Ronald Griffin | 2003-03-11 |
| D470279 | Vacuum cleaner with detachable blower | John Griffin, Robert L. Crevling, Jr. | 2003-02-11 |
| D469934 | Vacuum cleaner with detachable blower | Kevin D. Fry, John Griffin, Robert L. Crevling, Jr. | 2003-02-04 |
| 6484351 | Latching system for a vacuum cleaner with detachable blower | Ronald Griffin | 2002-11-26 |
| D434537 | Vacuum cleaner head | John Griffin, David Martinez, Robert L. Crevling, Jr. | 2000-11-28 |
| D426687 | Vacuum cleaner head | John Griffin, David Martinez, Robert L. Crevling, Jr. | 2000-06-13 |
| D426360 | Vacuum cleaner head | John Griffin, David Martinez, Robert L. Crevling, Jr. | 2000-06-06 |
| 6069330 | Mechanical shut-off and bypass assembly | Robert L. Crevling, Jr. | 2000-05-30 |
| 5918344 | Self-evacuating vacuum cleaner | Robert L. Crevling, Jr. | 1999-07-06 |
| 5850668 | Self-evacuating vacuum cleaner | Robert C. Berfield, Randy L. Buss | 1998-12-22 |
| 5715568 | Vacuum apparatus having a pump for discharging liquid therefrom | Robert C. Berfield | 1998-02-10 |
| 5318158 | Cord retainer for electric power cord | — | 1994-06-07 |
| D347261 | Pressure washer | Robert C. Berfield | 1994-05-24 |
| D344615 | Combined blower and vacuum | Robert C. Berfield | 1994-02-22 |
| D341008 | Wheeled tank for a pressure washer | Robert C. Berfield, Ronald F. Meland | 1993-11-02 |