Issued Patents All Time
Showing 26–50 of 51 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6955152 | Manually operated tool | Sebastian Friedrich | 2005-10-18 |
| 6945203 | Two-cycle engine | Helmar Amend, Werner Geyer, Claus Fleig | 2005-09-20 |
| 6786192 | Portable, manually guided implement | — | 2004-09-07 |
| 6787028 | Operating substance tank, especially for a portable handheld work apparatus | Thomas Schweigert, Florian Hoche | 2004-09-07 |
| 6688404 | Portable handheld edge cutter | Heiko Rosskamp, Claus Strodthoff | 2004-02-10 |
| 6651347 | Portable handheld work apparatus | — | 2003-11-25 |
| 6622387 | Tank for an operating substance and especially a tank for an operating substance for a portable handheld work apparatus | Florian Hoche | 2003-09-23 |
| 6536117 | Portable handheld work apparatus | Thomas Schweigert, Gerhard Stoll | 2003-03-25 |
| 6464018 | Portable handheld drilling machine having an internal combustion engine | — | 2002-10-15 |
| 6375171 | Vibration damper | Helmut Zimmermann, Horst Otterbach, Bernhard Durr, Manfred Rabis, Karl-Heinz Klopfer +2 more | 2002-04-23 |
| 6305867 | Connection for the sections of a separable guide tube and of a drive shaft disposed therein | Thomas Schweigert, Peter Götzenberger, Steffen Obst, Helmut Unger | 2001-10-23 |
| D448638 | Hand-held drill | Michael Tinius | 2001-10-02 |
| 6112419 | Cutter head with cover for drive pinion | Joachim Hoffmann, Berthold Schell | 2000-09-05 |
| 5926961 | Tree trimmer with telescopic rod | — | 1999-07-27 |
| 5896669 | Cutterhead for an overhead branch cutter | — | 1999-04-27 |
| 5842277 | Hand-held working tool, especially trimmer | Jurgen Haberlein, Helmut Schlessmann | 1998-12-01 |
| 5819418 | Working tool for trimming trees | — | 1998-10-13 |
| 5746160 | Hand-held working tool with combustion air channel arranged at blower housing | Thomas Stark, Helmut Zimmermann | 1998-05-05 |
| 5595153 | Portable handheld work apparatus having a filter case | Klaus Hoppner, Karl Forderer, Georg Lohse | 1997-01-21 |
| 5522355 | Hand-held tool device, especially motor chain saw | — | 1996-06-04 |
| 5372767 | Method for applying a stopper to a rope | Helmut Zimmermann, Hermann Hagele | 1994-12-13 |
| 5358062 | Portable handheld drilling apparatus | Hans Nickel, Helmut Zimmermann, Rudolf Krebs, Harald Schliemann | 1994-10-25 |
| 5287832 | Starting device for an internal combustion engine | — | 1994-02-22 |
| 4600516 | Sulfonated tributylphenol ethoxylates, their use, and a process for preparing sulfonated alkoxylates | Norbert Wester, Walter Gulden, Gerhart Schneider | 1986-07-15 |
| 4471097 | Water soluble copolymers containing vinyl imidazole as drilling fluid additives | James K. Bannerman, Friedrich Engelhardt, Arvind D. Patel | 1984-09-11 |