Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5249634 | Impact borer for embedding lines, anchoring cables, and sinking wells | John C. Bueter, Martin D. Chandler, Frederick W. Neuls, Harry P. Laffkas | 1993-10-05 |
| 5109932 | Impact borer, connector for embedding lines, anchoring cables, and sinking wells | John C. Bueter, Martin D. Chandler, Frederick W. Neuls, Harry P. Laffkas | 1992-05-05 |