Issued Patents All Time
Showing 76–79 of 79 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4694512 | Plumbing mixing circuit control apparatus for a combination set | Gunter Sieberhagen | 1987-09-22 |
| 4674678 | Mixing fixture for plumbing | Gunter Sieberhagen | 1987-06-23 |
| 4667987 | Device for connecting pipes with fittings | — | 1987-05-26 |
| 4407444 | Thermostatically controlled mixer battery | Norbert Ronzon, Eugen Weidner, deceased | 1983-10-04 |