Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5700113 | Spade-type boring bit and an associated method and apparatus for forming metallic parts | Paul A. Stone | 1997-12-23 |
| 5697738 | Spade-type boring bit having chamfered corner portions | Paul A. Stone, Timothy T. McKenzie, Richard Alan Adams | 1997-12-16 |