Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880364 | Portable electric blower | Robert C. Berfield, Ronald F. Meland | 1989-11-14 |
| 4836753 | Portable electric blower | Robert C. Berfield, Ronald F. Meland | 1989-06-06 |
| 4799699 | Dolly frame | Robert C. Berfield | 1989-01-24 |
| 4797072 | Portable electric blower | Robert C. Berfield, Ronald F. Meland | 1989-01-10 |