Did You Know...
...that Kleenex tissue was originally designed to be a gas mask filter? It was developed at the beginning of World War I to replace cotton, which was then in short supply as a surgical dressing.
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| Number | Title | Issue Date |
| D582341 | Rechargeable battery | 12/09/2008 |
| D579444 | Earphone | 10/28/2008 |
| D579005 | Earphone | 10/21/2008 |
| D578518 | Earphones | 10/14/2008 |
| 7406180 | Headphone with behind-the-head headband There is provided a headphone with a behind-the-head headband comprising at least one transducer and a behind-the-head headband for receiving the transducer. The behind-the-head headband further comprises first and second contact locations for resting against a temp... | 07/29/2008 |
| D574013 | Audio-visual play-back device for sound or image | 07/29/2008 |
| D569369 | Headset | 05/20/2008 |
| D569372 | Headset | 05/20/2008 |
| D565556 | Headset | 04/01/2008 |
| D565025 | Headset | 03/25/2008 |
| D565034 | Headset | 03/25/2008 |
| D565026 | Headset | 03/25/2008 |
| 7317808 | Microphone The invention is directed to a microphone, particularly a microphone of the kind used in theaters or in television studios, preferably a wireless microphone. It is known to provide marking in the form of a microphone cap or a colored adhesive tape at the end of the ... | 01/08/2008 |
| 7292703 | Headphones According to the invention a headphone set comprises a hoop band, to each of the two ends of which is fixed a respective acoustic transducer and which extends accurately in a plane, with at least one joint for folding the ends of the hoop band inwardly in the plane ... | 11/06/2007 |
| 7251341 | Microphone The invention relates to a microphone. Microphones of very different types and genera have been known for a very long time and are also required for very different applications. Apart from “classical” microphones, microphones are also used in headsets, and frequ... | 07/31/2007 |
| D540251 | Interfacial adapter | 04/10/2007 |
| D540311 | Headphone container | 04/10/2007 |
| 7197153 | Microphone stand The invention is based on the idea of separating the microphone unit and the wireless transmitter device from wireless microphones and to connect the wireless transmitter device to a microphone stand. Accordingly, a microphone stand comprises a first XLR audio conne... | 03/27/2007 |
| 7180427 | Information system An information system for supplying a predetermined region with information includes a transmitter for transmitting information in digitally coded form and a hand-held device. The hand-held device includes a receiver for receiving the information transmitted by the ... | 02/20/2007 |
| 6934401 | Closed headphones with transducer system Headphones of various designs and types of construction, in particular also closed headphones, have been known for a long time. Headphones of the type mentioned above should have the desired frequency response in all frequency positions and, in particular, this freq... | 08/23/2005 |
| 6816092 | Method and circuit arrangement for encoding and decoding data The invention is directed to a method for encoding data of a data signal by a periodic synchronous signal having at least two signal levels in a baseband signal. To provide a possibility by which the data of the synchronous signal can be encoded and decoded again in... | 11/09/2004 |
| 6631396 | Process and electronic data-processing system for communication with at least one other electronic data-processing system An electronic data-processing system for communicating with at least one other device wherein when a processing program and data are transmitted collectively from one electronic data-processing system to another electronic data-processing system.... | 10/07/2003 |
| 6351541 | Electrostatic transducer An electrostatic transducer with a tubular housing in which a planar transducer membrane is arranged, whereby the transducer membrane is arranged at an angle other than 0° to the cross-section of the housing. Due to the angular arrangement of the transdu... | 02/26/2002 |
| 6305654 | Clamping holder A clamping holder comprises an arrangement of a first leg and a second leg which are constructed in such a way that they can be moved towards one another. An adjusting device acts on at least one of the legs. Activation of the adjusting device enables a m... | 10/23/2001 |
