Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4875653 | Support systems and apparatus for suspending and resuspending articles at selected height positions | — | 1989-10-24 |
| 4846842 | Body joint rotation support device | William K. McMaster, William Michael Hamilton | 1989-07-11 |