Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4991695 | Hydraulic brake system for a large rotating mass | Ernest W. Hellmer | 1991-02-12 |
| 4605368 | Swivel hose connection and adjustable mounting of support member for cam follower and swivels | Ernest W. Hellmer | 1986-08-12 |