Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5205682 | Adjustable dual bit drilling machine | — | 1993-04-27 |
| 5073068 | Peck feed drilling machine | Douglas D. Doeden | 1991-12-17 |
| D294989 | Manual window washer device | — | 1988-03-29 |
| 4686893 | Cover assembly for an air moving device | — | 1987-08-18 |
| 4397060 | Vacuum cleaner tool for use on horizontal and vertical surfaces | William R. Lessig, III, Timothy John Canatella | 1983-08-09 |
| 4361929 | Vacuum cleaner tool having a two-position rotary brush | — | 1982-12-07 |
| 4306330 | Air-powered vacuum cleaner floor tool | — | 1981-12-22 |
| 4305176 | Air-powered vacuum cleaner floor tool | William R. Lessig, III | 1981-12-15 |
| 4298204 | Seal | — | 1981-11-03 |
| 4281964 | Turbine housing and method for making the same | — | 1981-08-04 |
| 4265018 | Grass trimmer device | Martin O. Schrock, Thomas J. Howard, Jr. | 1981-05-05 |