Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6193032 | Piezoceramic vibration control device and tuning control thereof | George A. Lesieutre, Christopher L. Davis | 2001-02-27 |
| 5347870 | Dual function system having a piezoelectric element | Roger W. Mayne, Daniel Inman | 1994-09-20 |
| 5113854 | Quick-donning protective hood assembly | James V. Zappa | 1992-05-19 |
| 4879996 | Closed circuit breathing apparatus | Van Ness Harwood, Jr., Loyal G. Netteland | 1989-11-14 |