Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879755 | Medium frequency mine communication system | Larry G. Stolarczyk, Gerald J. Boese, William E. Mondt, Marvin L. Hasenack, Jr., James L. Zappanti +2 more | 1989-11-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879755 | Medium frequency mine communication system | Larry G. Stolarczyk, Gerald J. Boese, William E. Mondt, Marvin L. Hasenack, Jr., James L. Zappanti +2 more | 1989-11-07 |