Issued Patents All Time
Showing 26–30 of 30 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5432957 | Conversion kit for toilets for varying shapes | Brian P. Doyle, Christine G. Kronich | 1995-07-18 |
| 5348336 | Walking aid | Brian P. Doyle, Gerald Thomas Griggs | 1994-09-20 |
| 5303430 | Conversion kit for adjusting the height of a flush toilet | Brian P. Doyle, David Khazanovich | 1994-04-19 |
| 5056753 | Safety support structure | Kevin R. Lunau, Stephen P. Reed | 1991-10-15 |
| 4759769 | Artificial spinal disc | Thomas P. Hedman, John Kostuik, Brian E. Maki | 1988-07-26 |