Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4928346 | Hand-held vacuum cleaner with power brush | Donald E. Elson, Burton E. Gerke, Jr., Michael E. Bitzel, Bruce A. Wilder, Stanley J. Rodowsky, Jr. +2 more | 1990-05-29 |
| 4841594 | Cordless vacuum cleaner with power brush | Donald E. Elson, Burton E. Gerke, Jr., Michael E. Bitzel, Bruce A. Wilder, Stanley J. Rodowsky, Jr. +2 more | 1989-06-27 |