Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4881766 | Lock mechanism | Theodore E. Schmidt | 1989-11-21 |
| 4872286 | External latch structure for locking a door in different positions | Theodore E. Schmidt, William C. Thomas | 1989-10-10 |