Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4945771 | Integrated flow meter and vacuum gauge and use | — | 1990-08-07 |
| 4871077 | Tamper resistant, tamper evident leak proof container | William C. Dixon | 1989-10-03 |
| 4813563 | Tamper resistant, tamper evident leak proof container | William C. Dixon | 1989-03-21 |
| D293950 | Portable machine for wet or dry vacuum extraction | Douglas A. Hembd | 1988-01-26 |
| 4651380 | Portable vacuum cleaning machine | — | 1987-03-24 |
| 4580309 | Self-contained multi-function cleaning system | — | 1986-04-08 |