Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D258487 | Tool for gripping and lifting logs | Robert Brugger, Ernest J. Waldron, Jr., Carl F. Piontkowski | 1981-03-10 |
| 4221416 | Log lifting apparatus | Carl F. Piontkowski, Robert Brugger, Ernest J. Waldron, Jr. | 1980-09-09 |