Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4748834 | Key made of magnetic material | — | 1988-06-07 |
| 4631939 | Lock with locking elements movable by a magnetic key | — | 1986-12-30 |
| 4476701 | Magnetic lock and key | — | 1984-10-16 |
| 4346924 | Releasable fastening device | — | 1982-08-31 |
| 4287734 | Combination lock mechanism | — | 1981-09-08 |
| 4228667 | Magnetically acting lock and key | — | 1980-10-21 |