Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7068795 | Public address system and method for an urban transit vehicle | John R. Rowlette, Jr. | 2006-06-27 |
| D429719 | Urban transit vehicle microphone housing | John R. Rowlette, Jr. | 2000-08-22 |
| 5883519 | Deflection device | — | 1999-03-16 |
| 5331353 | Device for limiting the amount of time an electrical appliance such as a television may be used | Randal P. Levenson, Zach D. Cox, Jr., Frank A. Browne | 1994-07-19 |
| 4726429 | Percussion down hole drilling tool with central fluid flushing passage | — | 1988-02-23 |
| 4720915 | Printed circuit board and process for its manufacture | Scott G. McCurdy, Stanley R. Ruggio | 1988-01-26 |
| 4694911 | Drilling assembly for percussion drilling of deep wells | — | 1987-09-22 |