Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D388094 | Combined speaker and microphone | Masaru Tokiyama, David I. Blatt, Michael Henning | 1997-12-23 |
| 5593604 | Method of resistance welding thin elements | Michael Kirschner, Robert A. Charles, Sacha C. Hall | 1997-01-14 |