Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7437331 | Short message service (SMS) e-commerce A method for making a purchase of products or services via the Internet by a customer from a vendor includes transmitting, by the customer, a purchase request and mobile subscriber identification data representing the mobile subscriber identification number to the v... | 10/14/2008 |
| 7162251 | Method for detecting traffic data The invention relates to a method for acquiring traffic situation data in a network of traffic routes which is covered by a cellular mobile radio network comprising a multiplicity of base stations and in which a multiplicity of vehicles is moving which are in each c... | 01/09/2007 |
| 7006915 | Recording system for vehicles with CPS The invention relates to a detection system (84) and to a method for detecting vehicles (72) equipped with a position determination system (74), as they use certain routes (10). According to the invention, a vehicle transmits its received... | 02/28/2006 |
| 6931252 | Interference analysis for a mobile radiotelephone system with adaptive antennae A method for interference analysis in a mobile radio network having an adaptive antenna in at least some of its cells and including traffic channels and control channels, includes calculating an interference ratio of interference of one traffic channel of an adaptiv... | 08/16/2005 |
| 6892942 | Roadside control device for a toll apparatus installed in a motor vehicle A roadside control device for checking the correct operation of a toll apparatus which is installed in a motor vehicle passing the control device and exhibiting an identifying license plate. The toll apparatus performs a satellite-supported electronic toll deduction... | 05/17/2005 |
| 6816707 | Debiting device for deducting tolls The invention relates to a debiting device, which is arranged in a vehicle to deduct such tolls as are payable for the utilization of those road sections that are chargeable within a road network, and which comprises the following device modules permanently installe... | 11/09/2004 |
| 6807268 | Sequential calling system with prioritization of the last dialed telephone number A waiting time optimization for a caller of a called party having a number of telephone numbers is obtained by a device and a method for establishing a telecommunication connection from a caller to a called party via at least one telecommunication network, in which ... | 10/19/2004 |
| 6622082 | Location-related WAP traffic jam map by associating map excerpts in a traffic information center Simple and multipurpose traffic information is made possible by a method for selecting traffic information which is to be sent to a mobile wireless terminal from a traffic information center and which pertains to a geographic area of a road traffic networ... | 09/16/2003 |
