Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10851783 | Dry vacuum pump with pressurized bearing and seal | Peter Birch, Clive Marcus Lloyd Tunna | 2020-12-01 |
| 9476423 | Roots pump connection channels separating adjacent pump stages | Peter Birch, Thomas Dreifert, Clive Marcus Lloyd Tunna | 2016-10-25 |
| 9234519 | Vacuum pump | Thomas Dreifert, Wolfgang Giebmanns, Roland Muller | 2016-01-12 |
| 8602759 | Screw-type vacuum pump having overpressure openings | Peter Birch, Roland Muller, Magnus Janicki, Wolfgang Giebmanns | 2013-12-10 |
| 5062540 | Container recycling apparatus | — | 1991-11-05 |