Issued Patents 1994
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 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 |