Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6085360 | Automatically closing a toilet bowl lid | W. Calvin Yoke | 2000-07-11 |
| 5153946 | Apparatus and method for automatically closing a toilet bowl lid and seat | W. Calvin Yoke | 1992-10-13 |
| 4934659 | Hoist and dolly apparatus | — | 1990-06-19 |
| 4410316 | Method for production of corrugated paper | — | 1983-10-18 |