Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12304235 | Jam resistant chalk reel | Gregory David Parker, Kan-Ping Lo | 2025-05-20 |
| 11872838 | Jam resistant chalk reel | Gregory David Parker, Kan-Ping Lo | 2024-01-16 |
| 10859363 | Tape rule assembly with linear optical encoder for sensing human-readable graduations of length | Michael Murray, Aliaksei Chernyshou | 2020-12-08 |