Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8499501 | Portable manway cover hinge device | Edward A. DePietro | 2013-08-06 |
| 8038031 | Portable manway cover hinge device | Edward A. DePietro | 2011-10-18 |
| 7931168 | Portable manway cover hinge device | Edward A. DePietro | 2011-04-26 |
| 7556160 | Portable lift, support, removal and/or installation system and method | Edward A. DePietro | 2009-07-07 |
| 6786343 | Portable lift, support and/or installation system and method | Edward A. DePietro | 2004-09-07 |