Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5056762 | Apparatus for mounting a gas washing sink in a centered manner in a perforated brick | Hans Rothfuss, Raimund Bruckner, Peter Keutgen, Manfred Winkelmann, Herbert Metzger | 1991-10-15 |
| 5007621 | Apparatus for mounting a gas washing sink in a centered manner in perforated brick | Hans Rothfuss, Raimund Bruckner, Peter Keutgen, Manfred Winkelmann, Herbert Metzger | 1991-04-16 |
| 4978108 | Gas washing sink without integral closure member | Hans Rothfuss, Raimund Bruckner, Peter Keutgen, Manfred Winkelmann, Herbert Metzger | 1990-12-18 |
| 4598732 | Gate valve having internal cooling structure | Wilhelm Kuckertz | 1986-07-08 |