Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5205558 | Spherical puzzle | — | 1993-04-27 |
| 4210098 | Apparatus for treating internal surfaces of walls of a tank | David V. Harrison, Roy Keith Weaver | 1980-07-01 |
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5205558 | Spherical puzzle | — | 1993-04-27 |
| 4210098 | Apparatus for treating internal surfaces of walls of a tank | David V. Harrison, Roy Keith Weaver | 1980-07-01 |