Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10030784 | Ball valve tertiary seal assembly and method | — | 2018-07-24 |
| 9010727 | Valve stem assembly for rotary valve and method | Robert Earl Maki | 2015-04-21 |
| 8490949 | Valve stem assembly for rotary valve and method | Robert Eric Maki | 2013-07-23 |
| 5341835 | Lubrication system for valve seat of a gate valve | — | 1994-08-30 |