Issued Patents All Time
Showing 1–19 of 19 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11096537 | Vacuum bag | James P. Blackwell, Jr., Robert L. Crevling, Jr. | 2021-08-24 |
| 11013380 | Wet/dry vacuum bag | James P. Blackwell, Jr., Robert L. Crevling, Jr. | 2021-05-25 |
| 10285549 | Wet/dry vacuum bag | James P. Blackwell, Jr., Robert L. Crevling, Jr. | 2019-05-14 |
| 10165919 | Vacuum bag | James P. Blackwell, Jr., Robert L. Crevling, Jr. | 2019-01-01 |
| 8533902 | Removable circuit board assembly for a vacuum | Neil N. Norell, Melvin E. Wolfe, Jr., James M. Robitaille, Doug Adams | 2013-09-17 |
| 8381351 | Mop bucket | Robert L. Crevling, Jr., Melvin E. Wolfe, Jr., John Griffin, David Martinez | 2013-02-26 |
| 8015661 | Vacuum with rechargeable battery | Mark E. Baer, Li H. Liu | 2011-09-13 |
| D619318 | Mop bucket | Robert L. Crevling, Jr., Melvin E. Wolfe, Jr., John Griffin, David Martinez | 2010-07-06 |
| D611215 | Mop bucket | Robert L. Crevling, Jr., Melvin E. Wolfe, Jr., John Griffin, David Martinez | 2010-03-02 |
| 4955104 | Liquid dispensing and suctioning system for surface cleaning | — | 1990-09-11 |
| 4845802 | Carpet cleaning apparatus | Matthew L. Miller, Michael B. Woodhall, Mark F. Jennings | 1989-07-11 |
| 4577366 | Vacuum cleaner nozzle having rotating brush | Robert C. Berfield, Robert L. Crevling, Jr. | 1986-03-25 |
| 4538971 | Assembly of tank lid and fan means of a wet/dry vacuum | Rudolph W. Wacek, Robert C. Berfield, Ronald F. Meland, Robert L. Crevling, Jr., Lonnie B. Lawson, Jr. | 1985-09-03 |
| D276279 | Electric vacuum cleaner | Rudolph W. Wacek, Robert C. Berfield | 1984-11-06 |
| 4380845 | Nozzle for hand-held vacuum | Kerry E. Strouse, Richard M. Fegan | 1983-04-26 |
| 4334337 | Compact wet-dry electric vacuum cleaner | Richard M. Fegan, Robert C. Berfield, Kenneth R. Hiester, Rudolph W. Wacek | 1982-06-15 |
| 4330899 | Noise reducing blower motor housing means for vacuum cleaner, or the like | Richard M. Fegan, Robert C. Berfield, Kenneth R. Hiester, Rudolph W. Wacek | 1982-05-25 |
| 4229193 | Vacuum cleaner and sealed filter bag assembly therefor particularly useful for filtering asbestos fibers from air | — | 1980-10-21 |
| 4213224 | By-pass type portable vacuum cleaner | — | 1980-07-22 |