Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4849590 | Electric switch with counteracting electro-electro-dynamic forces | Lawrence F. Freitag, Frank W. Kussy | 1989-07-18 |
| 4804933 | Automatic transfer switch | Lawrence F. Freitag, Frank W. Kussy | 1989-02-14 |