Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| RE45360 | Rotary kiln heat exchanger and method of assembling same | John J. Stephansky, John N. Snyder | 2015-02-03 |
| RE44612 | Rotary kiln heat exchanger and method of assembling same | John J. Stephansky, John N. Snyder | 2013-11-26 |
| 6688884 | Rotary kiln heat exchanger and method of assembling same | John J. Stephansky, John N. Snyder | 2004-02-10 |