Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D304505 | Underwater pool cleaning apparatus | Robert W. Maier, Deiter Rief, John Leavitt Gard, Herman E. Frentzel | 1989-11-07 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D304505 | Underwater pool cleaning apparatus | Robert W. Maier, Deiter Rief, John Leavitt Gard, Herman E. Frentzel | 1989-11-07 |