Patents per Year
Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6718789 | Pipe freezer with defrost cycle | — | 2004-04-13 |
| 6286329 | Pipe freezer | — | 2001-09-11 |
| 6128176 | External burner shut-off | — | 2000-10-03 |
| 5548965 | Multi-cavity evaporator | Limin Chen | 1996-08-27 |
| 4309875 | Pipe freezer or the like | — | 1982-01-12 |