Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5851308 | Acid bottle washing apparatus and method | Steven Engelking | 1998-12-22 |
| 5720307 | Acid bottle washing apparatus and method | Steven Engelking | 1998-02-24 |
| 5491282 | Apparatus and method for neutralizing a contaminated heating element | Steven Engelking | 1996-02-13 |
| 5489183 | Hand truck for handling cylinders of compressed gas and the like | Lavern E. Malden, Manuel Cisneros | 1996-02-06 |