Assignee
No assignee recorded.
Inventors
- Steven J. Kirch (10 patents)
- Unknown
- John J. Ritsko (22 patents)
- Kurt A. Smith (14 patents)
- James L. Speidell (54 patents)
- James T. Yeh (18 patents)
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Skip to contentUS Patent 4923772 · Granted May 8, 1990
No assignee recorded.