Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9198552 | Vacuum cleaner with screen cage | Melvin E. Wolfe, Jr., Randy L. Buss | 2015-12-01 |
| 8707497 | Combination vacuum cleaner, dolly, and mounting bracket | — | 2014-04-29 |
| 8533906 | Vacuum cleaner with recirculated cooling air | — | 2013-09-17 |
| D688842 | Vacuum cleaner | Robert L. Crevling, Jr., John Griffin | 2013-08-27 |
| D683507 | Vacuum cleaner | Robert L. Crevling, Jr., John Griffin | 2013-05-28 |
| D646860 | Vacuum cleaner | Robert L. Crevling, Jr., John Griffin | 2011-10-11 |
| 8015661 | Vacuum with rechargeable battery | Mark E. Baer, Jonathan Miller | 2011-09-13 |
| D636954 | Vacuum cleaner | Robert L. Crevling, Jr., John Griffin | 2011-04-26 |
| 7555809 | Wall hanging vacuum cleaner | — | 2009-07-07 |
| D581114 | Vacuum cleaner | Robert L. Crevling, Jr., John Griffin | 2008-11-18 |
| D571513 | Vacuum cleaner | John Griffin, Robert L. Crevling, Jr. | 2008-06-17 |
| D568565 | Vacuum cleaner | John Griffin, Robert L. Crevling, Jr. | 2008-05-06 |
| RE39595 | Vacuum cleaner tank assembly | — | 2007-05-01 |
| D537578 | Handheld vacuum | Robert L. Crevling, Jr., John Griffin | 2007-02-27 |
| 7089730 | Exhaust gas purification method for internal combustion engine | Satoshi Wachi, Hiromichi Hisato | 2006-08-15 |
| D521445 | Battery cartridge | — | 2006-05-23 |
| D521446 | Battery cartridge | — | 2006-05-23 |
| D520444 | Battery cartridge | — | 2006-05-09 |
| 6557206 | Vacuum cleaner mounting assembly | — | 2003-05-06 |
| 6499474 | Air/fuel ratio control apparatus for internal combustion engine | Satoshi Wachi, Hideaki Katashiba, Hiromichi Hisato | 2002-12-31 |
| 6440191 | Vacuum cleaner filter assembly | Robert C. Berfield | 2002-08-27 |
| 6179889 | Vacuum cleaner tank assembly | — | 2001-01-30 |
| 6113663 | Vacuum cleaner having a dual filter assembly | — | 2000-09-05 |
| 6110248 | Dual filter assembly for a vacuum cleaner | — | 2000-08-29 |
| D429394 | Vacuum cleaner tank | John Griffin | 2000-08-08 |