Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4841594 | Cordless vacuum cleaner with power brush | Donald E. Elson, Burton E. Gerke, Jr., Michael E. Bitzel, Stanley J. Rodowsky, Jr., William R. Lessig, III +2 more | 1989-06-27 |