Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6513648 | Reciprocating conveyor with top front drive | Olof A. Hallstrom, Daniel C. Hallstrom | 2003-02-04 |
| 5490441 | Automatic reciprocation of a reversible fluid pressure unit and switching valve therefor | Olof A. Hallstrom, Daniel C. Hallstrom | 1996-02-13 |