Issued Patents 1989
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877275 | Protected sliding bolt locking structure | — | 1989-10-31 |
| 4861079 | Multi-purpose lock bolt | — | 1989-08-29 |
| D302953 | Lock status indicator | — | 1989-08-22 |
| 4852920 | Self protecting hasp | — | 1989-08-01 |
| 4798065 | Lock having a reversible right and left hand bolt | — | 1989-01-17 |
| 4798069 | Protecting device for lever handle door locks | — | 1989-01-17 |