Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4864682 | Self-adjusting wiper strip assembly for a vacuum cleaner | Kendell S. Lahndorff, Jeffrey M. Nauman | 1989-09-12 |
| 4802254 | Anti-cord swallowing system and method for a floor cleaner | Kendell S. Lahndorff | 1989-02-07 |