Issued Patents All Time
Showing 26–40 of 40 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5931036 | Rotating locking cylinder for a safety lock | — | 1999-08-03 |
| 5666835 | Key and installation double cylinder for a security lock | — | 1997-09-16 |
| 5553473 | Rotary locking cylinder for a safety lock | — | 1996-09-10 |
| 5501087 | Rotary locking cylinder for a safety lock | — | 1996-03-26 |
| 5479801 | Web for a built-in double lock cylinder | — | 1996-01-02 |
| 5457974 | Key and rotary locking cylinder for a safety lock | — | 1995-10-17 |
| 5437176 | Key and rotary lock cylinder for safety lock | — | 1995-08-01 |
| 5349830 | Lock system | — | 1994-09-27 |
| 4905489 | Tumbler in a cylinder lock | — | 1990-03-06 |
| 4686816 | Dip tube loader and handler apparatus | — | 1987-08-18 |
| 4630513 | Automatic dip trimmer apparatus | — | 1986-12-23 |
| 4553452 | Method for producing security keys having closure possibilities differing from one another | — | 1985-11-19 |
| 4325241 | System for the increase of the number of differing locking possibilities in rotary cylinder locks | — | 1982-04-20 |
| 4292824 | Double sided tumbler cylinder for a security lock | — | 1981-10-06 |
| 4252490 | Ball retrieving and storage device | — | 1981-02-24 |