Issued Patents 2002
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6484412 | Non-spill chalk line and measured refill cartridge | Joseph Donaldson, Kevin M. Hanneman, Christopher C. Mazczewski | 2002-11-26 |
| 6443929 | Needle tip guard for hypodermic needles | Thomas C. Kuracina, Randall E. Ohnemus, Richard Cohen | 2002-09-03 |