Issued Patents 1982
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4314099 | Fluid-insulated universal flexible acoustic coupler muff system | John Jeffries | 1982-02-02 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4314099 | Fluid-insulated universal flexible acoustic coupler muff system | John Jeffries | 1982-02-02 |