Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879996 | Closed circuit breathing apparatus | Van Ness Harwood, Jr., Loyal G. Netteland | 1989-11-14 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4879996 | Closed circuit breathing apparatus | Van Ness Harwood, Jr., Loyal G. Netteland | 1989-11-14 |