Issued Patents All Time
Showing 1–25 of 27 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7210744 | Manually replaceable protective wear sleeve | — | 2007-05-01 |
| 6854810 | T-shaped cutter tool assembly with wear sleeve | — | 2005-02-15 |
| 6798868 | Call notification service for use with call waiting | Barry Paul Pershan | 2004-09-28 |
| 6786557 | Protective wear sleeve having tapered lock and retainer | — | 2004-09-07 |
| 6331035 | Cutting tool holder assembly with press fit | — | 2001-12-18 |
| 6260638 | Rotatable cutting bit assembly with wedge-lock retention assembly | Ted R. Massa, David R. Siddle, William P. Losch | 2001-07-17 |
| 6247759 | Cutting tool assembly with replaceable spray nozzle | Jan S. Grieveson, Daniel C. Sheirer, William P. Losch | 2001-06-19 |
| 6234579 | Cutting tool holder retention assembly | — | 2001-05-22 |
| 6226359 | Voice mail source address indentification blocking | Michael G. Pilkerton, Robert D. Farris | 2001-05-01 |
| 6220671 | Cutting tool holder retention system | — | 2001-04-24 |
| 6176552 | Cutting bit support member with undercut flange for removal | Kenneth J. Topka | 2001-01-23 |
| 5996714 | Rotatable cutting bit assembly with wedge-lock retention assembly | Ted R. Massa, David R. Siddle, William P. Losch | 1999-12-07 |
| 5854835 | Telecommunications network circuit usage measurement | J. Alfred Baird, Robert D. Farris | 1998-12-29 |
| 5809120 | Telecommunications network circuit usage measurement | J. Alfred Baird | 1998-09-15 |
| 5781620 | Method and system for toll carrier selection | Gary Sacra, Audrey Renee Taylor | 1998-07-14 |
| 5774530 | Telecommunications network circuit usage measurement | J. Alfred Baird | 1998-06-30 |
| 5730502 | Cutting tool sleeve rotation limitation system | — | 1998-03-24 |
| 5690393 | Cutting tool retention system | Ted R. Massa | 1997-11-25 |
| 5628549 | Cutting tool sleeve rotation limitation system | Cary D. Ritchey | 1997-05-13 |
| 5452628 | Cold headed center vacuum drill bit | Daniel C. Sheirer, James E. Elam, Paul Ewing | 1995-09-26 |
| 5315641 | Public switched telephone network access to public data network | Lawrence A. Delss | 1994-05-24 |
| 5297643 | Cold headed center vacuum drill bit | Daniel C. Sheirer, James E. Elam, Paul Ewing | 1994-03-29 |
| 5184689 | Radial cut drill bit insert | Daniel C. Sheirer, Gerald L. Woods | 1993-02-09 |
| 5172775 | Rotary drill bit insert | Daniel C. Sheirer, Gerald L. Woods | 1992-12-22 |
| 4850649 | Rotatable cutting bit | Wayne H. Beach, Lawrence R. Burns | 1989-07-25 |