Issued Patents All Time
Showing 26–41 of 41 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D637778 | Vacuum cleaner | Robert L. Crevling, Jr., John Griffin | 2011-05-10 |
| D631627 | Vacuum cleaner | Robert L. Crevling, Jr., John Griffin | 2011-01-25 |
| D631216 | Vacuum cleaner | Robert L. Crevling, Jr., John Griffin | 2011-01-18 |
| 7669279 | Liquid-dispensing attachment for vacuum cleaners | Robert L. Crevling, Jr. | 2010-03-02 |
| D569066 | Vacuum cleaner | Robert L. Crevling, Jr., John Griffin | 2008-05-13 |
| D541996 | Liquid-dispensing attachment for vacuum cleaners | Robert L. Crevling, Jr., John Griffin | 2007-05-01 |
| D507386 | Combination wet/dry vacuum cleaner head | John Griffin, Robert L. Crevling, Jr. | 2005-07-12 |
| D506042 | Combination wet/dry vacuum cleaner | John Griffin, Robert L. Crevling, Jr. | 2005-06-07 |
| D479371 | Vacuum cleaner | John Griffin | 2003-09-02 |
| D470280 | Vacuum cleaner | John Griffin | 2003-02-11 |
| D470281 | Vacuum cleaner | John Griffin | 2003-02-11 |
| D469934 | Vacuum cleaner with detachable blower | John Griffin, Craig A. Seasholtz, Robert L. Crevling, Jr. | 2003-02-04 |
| 6510583 | Cord retainer for vacuum cleaner | Ronald Griffin | 2003-01-28 |
| 6499182 | Convertible blower port for vacuum cleaner | Robert C. Berfield, Ronald Griffin, Randy L. Buss | 2002-12-31 |
| D429042 | Vacuum cleaner | John Griffin, Li H. Liu | 2000-08-01 |
| D426359 | Vacuum cleaner head | John Griffin | 2000-06-06 |