Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10610034 | Easy change mattress sheet attachment system | Xiaolu Huang Sturgeon | 2020-04-07 |
| 6012725 | Skate brake systems and methods | David N. Mitchell | 2000-01-11 |
| 5836590 | Method and apparatus for slowing or stopping a roller skate | David N. Mitchell, James R. Leto, Jr. | 1998-11-17 |
| 5829756 | Apparatus for slowing or stopping a roller skate and methods | David N. Mitchell | 1998-11-03 |
| 5704619 | Slidable skate brake and methods | David N. Mitchell | 1998-01-06 |