Issued Patents 2004
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6817537 | Time card and time recorder system using time card | Hirosada Watanabe, Masayuki Mochizuki, Hiroaki Yamagishi, Yuichi Ishizuka | 2004-11-16 |
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6817537 | Time card and time recorder system using time card | Hirosada Watanabe, Masayuki Mochizuki, Hiroaki Yamagishi, Yuichi Ishizuka | 2004-11-16 |