Assignee
No assignee recorded.
Inventors
- Fred E. Arnold (81 patents)
- Thaddeus E. Helminiak (10 patents)
- Donald R. Wiff (6 patents)
- Loon-Seng Tan (109 patents)
- Unknown
- Hoe Hin Chuah (15 patents)
US Patent 4977223 · Granted Dec 11, 1990
No assignee recorded.