Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5203812 | Method of connecting two components | Hans Maass | 1993-04-20 |
| 5046228 | Tool set for connecting sheet metal pieces | Hans Maass | 1991-09-10 |
| 5040278 | Power-driven pincer-type tool holder for use in handling apparatuses | Hans Maass | 1991-08-20 |
| 4972565 | Tool set for connecting sheet metal pieces | Hans Maass | 1990-11-27 |
| 4928370 | Tool set for connecting superposed sheet metal work pieces | Hans Maass | 1990-05-29 |
| 4658502 | Sheet metal joining apparatus | Hans Maass | 1987-04-21 |
| 4614017 | Device for joining metal sheets by a rivetting-type method | Hans Maab | 1986-09-30 |
| 4584753 | Apparatus for connecting sheet metal pieces | Hans Maass | 1986-04-29 |
| 4483477 | Clamping device for tubes to be welded together | Hans Maass | 1984-11-20 |
| 4400966 | Tool for forming a lateral opening in a tube | Hans Maab | 1983-08-30 |
| 4181002 | Tools for bending sheet metal | Hans Maass | 1980-01-01 |