Issued Patents 2011
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7935192 | Drain cleaning apparatus with restricted reverse function | David Silverman, Michael W. Silverman | 2011-05-03 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7935192 | Drain cleaning apparatus with restricted reverse function | David Silverman, Michael W. Silverman | 2011-05-03 |