Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4800066 | End of life indicator for automatic toilet cleaning devices | Sylvester Sowell | 1989-01-24 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4800066 | End of life indicator for automatic toilet cleaning devices | Sylvester Sowell | 1989-01-24 |