Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6367934 | Multi-display systems | Joseph Salesky, Donald P. Wilcox | 2002-04-09 |
| 5478048 | Non-planar flexible graphite sealing rings | Harold A. Lacquement, John E. Bridges, III | 1995-12-26 |
| 5201532 | Flexible non-planar graphite sealing ring | Harold A. Lacquement | 1993-04-13 |
| 4907665 | Cast steel rock bit cutter cones having metallurgically bonded cutter inserts | Naresh J. Kar, Steven J. Guzowski | 1990-03-13 |
| 4811801 | Rock bits and inserts therefor | Bruce L. Campbell | 1989-03-14 |
| 4683781 | Cast steel rock bit cutter cones having metallurgically bonded cutter inserts, and process for making the same | Nareshchandra J. Kar, Steven J. Guzowski | 1987-08-04 |
| 4593776 | Rock bits having metallurgically bonded cutter inserts | Gunes M. Ecer, Karl O. Kuhn | 1986-06-10 |