Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4836891 | Self-contained oil well salt water concentration system | Donald M. Harrel, John M. Montague, Thomas L. Stansbury Sr., Carlton T. Sikes | 1989-06-06 |
| 4548151 | Replaceable marine fender mechanism | John M. Montague | 1985-10-22 |