Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7438501 | Ground freezing installation accommodating thermal contraction of metal feed pipes | — | 2008-10-21 |
| 6335962 | Apparatus and method for grouping and prioritizing voice messages for convenient playback | Syed S. Ali, Joseph M. Cannon, James A. Johanson | 2002-01-01 |