Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4220458 | Filter apparatus | Edward Koppelman, Robert G. Murray, A. K. V. Subba Rao | 1980-09-02 |
| 4201512 | Radially staged drag turbine | Chester W. Marynowski, F. Michael Lewis, Robert G. Murray, Konrad T. Semrau | 1980-05-06 |