Assignee
Inventors
- Xueming Zhang (14 patents)
- Shucheng Zhang (2 patents)
- Shuxia ZHANG (2 patents)
- Congshan Liu (1 patents)
- Haibuo Zhang (1 patents)
- Wenrong Li (3 patents)
- Qingyan Ji (1 patents)
- Shufang Zhang (5 patents)
- Shuwei Zhang (8 patents)
US Patent 5112463 · Granted May 12, 1992