Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880766 | Record material | Steven L. Vervacke, Timothy J. Bahowick, Kenneth D. Glanz | 1989-11-14 |
| 4837210 | Fluoran derivatives and their use in recording materials | Patricia Dwyer-Hallquist, William Joshua Becker, Kenneth D. Glanz | 1989-06-06 |
| 4800293 | Infrasonic switch | — | 1989-01-24 |