Issued Patents All Time
Showing 26–32 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5996283 | Housing assembly for installation in a window frame | — | 1999-12-07 |
| 5970656 | Housing assembly with beveled retainers for installation in a window frame | — | 1999-10-26 |
| 5829196 | Window balance brake shoe and pivot assembly | — | 1998-11-03 |
| 5669180 | Window balance brake shoe and pivot assembly | — | 1997-09-23 |
| 5536052 | Sash lock with improved tumbler | — | 1996-07-16 |
| 4530128 | Motor driven cylindrical brush for a cleaning apparatus | Gernot Jacob | 1985-07-23 |
| 4399585 | Vacuum cleaner with constant air flow | Gunter Kullik, Werner Durr | 1983-08-23 |