Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5209400 | Portable calculator for refrigeration heating and air conditioning equipment service | John M. Winslow, Walter Rubinstein | 1993-05-11 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5209400 | Portable calculator for refrigeration heating and air conditioning equipment service | John M. Winslow, Walter Rubinstein | 1993-05-11 |