Issued Patents 1994
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5365744 | Air conditioning and refrigeration systems utilizing a cryogen | Roland L. Roehrich, Dale T. Johnson | 1994-11-22 |
| 5320167 | Air conditioning and refrigeration systems utilizing a cryogen and heat pipes | Dale T. Johnson, Roland L. Roehrich | 1994-06-14 |
| 5315840 | Air conditioning and refrigeration methods and apparatus utilizing a cryogen | Roland L. Roehrich | 1994-05-31 |
| 5311927 | Air conditioning and refrigeration apparatus utilizing a cryogen | David H. Taylor, Roland L. Roehrich | 1994-05-17 |
| 5305825 | Air conditioning and refrigeration apparatus utilizing a cryogen | Roland L. Roehrich, David H. Taylor | 1994-04-26 |
| 5287705 | Air conditioning and refrigeration systems utilizing a cryogen | Roland L. Roehrich | 1994-02-22 |
| 5285644 | Air conditioning and refrigeration apparatus utilizing a cryogen | Roland L. Roehrich | 1994-02-15 |