Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4906368 | Expandable fiberglass pressure vessel having internal pipe connection | Robert Stark, Robert G. Stark, Jr., Janet S. Ellis | 1990-03-06 |
| 4632148 | Hydraulic distribution valve | Robert Stark, Robert G. Stark, Jr., Joseph W. Anderson | 1986-12-30 |
| 4627466 | Valve and actuator | Robert Stark, Robert G. Stark, Jr., Joseph W. Anderson | 1986-12-09 |
| 4588106 | Fiberglass molded pressure vessel and method of making same | Robert Stark, Robert G. Stark, Jr., Janet S. Ellis | 1986-05-13 |