Hedwig
Hedwig Graebeldinger, Erdmannhausen DE
Patent application number | Description | Published |
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20080291117 | Metamaterial Having the Capability of Broadband Left-Hand Guidance of Electromagnetic Waves - A metamaterial having a negative refractive index is presented, which has a dielectric carrier material ( | 11-27-2008 |
Hedwig Lismont, Hirten DE
Patent application number | Description | Published |
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20090050289 | Vaccuum Die-Casting Method - The invention relates to an improved vacuum die-casting, in particular for metals and metal alloys which contain Al, Mg, Zn, and Cu. In order to improve the quality of the components, it is proposed to produce vacuum in the mold cavity and the casting chamber cavity in several phases of the die-casting process. The use of the new method is contemplated for both cold-chamber and hot-chamber die-casting. | 02-26-2009 |
Hedwig Wassenhoven, Monchengladbach DE
Patent application number | Description | Published |
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20130239380 | HAND-OPERATED PRESSING TOOL - A hand-operated pressing tool, which is suitable in particular for producing pipe connections, for pressing cable lugs, and/or for actuating cutting jaws, comprises a drive device arranged in a housing. The drive device is connected to an energy source. Furthermore, a start button, a display device, and a diagnostic connector are provided. The start button as well as the display device are arranged under a transparent housing cover. Preferably, the housing cover can be opened in order to reach the diagnostic connector. | 09-19-2013 |