Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838038 | Temperature insulating apparatus for improving the efficiency of an evaporative cooling unit | Keith R. Boltz | 1989-06-13 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4838038 | Temperature insulating apparatus for improving the efficiency of an evaporative cooling unit | Keith R. Boltz | 1989-06-13 |