Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8905906 | Adaptor for converting conventional office chair into a multifunctional office/fitness chair | Yan-Gao Man, Guangping Gao | 2014-12-09 |
| 5071556 | Hydrocyclone having a high efficiency area to volume ratio | Charles M. Kalnins | 1991-12-10 |