Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6247759 | Cutting tool assembly with replaceable spray nozzle | Robert H. Montgomery, Jr., Jan S. Grieveson, William P. Losch | 2001-06-19 |
| 5927411 | Connector with variable resistance retention member | — | 1999-07-27 |
| 5467837 | Rotary drill bit having an insert with leading and trailing relief portions | Thomas R. Miller | 1995-11-21 |
| 5452628 | Cold headed center vacuum drill bit | Robert H. Montgomery, Jr., James E. Elam, Paul Ewing | 1995-09-26 |
| 5429199 | Cutting bit and cutting insert | Wayne H. Beach, Don C. Rowlett | 1995-07-04 |
| 5400861 | Rotatable cutting bit assembly | — | 1995-03-28 |
| 5297643 | Cold headed center vacuum drill bit | Robert H. Montgomery, Jr., James E. Elam, Paul Ewing | 1994-03-29 |
| 5184689 | Radial cut drill bit insert | Gerald L. Woods, Robert H. Montgomery, Jr. | 1993-02-09 |
| 5172775 | Rotary drill bit insert | Gerald L. Woods, Robert H. Montgomery, Jr. | 1992-12-22 |
| 4981328 | Rotatable tool having a carbide insert with bumps | Stephen P. Stiffler, Ray C. MacIntyre, Wayne H. Beach | 1991-01-01 |