Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4880665 | Touch control arrangement for graphics display apparatus having saw reflectors of frit composition | Robert P. Adler, Sam H. Kaplan | 1989-11-14 |
| 4859996 | Touch control arrangement for graphics display apparatus | Robert P. Adler, Sam H. Kaplan | 1989-08-22 |