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Lawrence Welk, the bandleader who entertained millions of Americans over a generation of broadcasting his TV show, once received a patent: for a music-themed design of an ashtray.
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| Number | Title | Issue Date |
| 6109525 | Method and device for registering vehicles in a road toll facility A system and method of registering vehicles in a road toll facility is provided with radio transmitter and receiver equipment (7) for microwaves arranged to communicate with vehicle units (12) provided in the vehicles (4), preferably including a transpond... | 08/29/2000 |
| 5859415 | Method and apparatus for the registration of a vehicle(s) in a free flow toll facility by tracking the vehicle along a path in the toll facility area A method registers a vehicle in a road toll facility that is provided with radio transmitter and receiver units (7). The radio transmitter and receiver units are configured to communicate with at least one vehicle unit (12) arranged in the vehicle (4). Th... | 01/12/1999 |
| 5796084 | Device for the registration of vehicle fees A device located in a vehicle for the registration of fees. It includes an activation unit for remote communications, a time counter, a sensor for sensing the traveling status of the vehicle from travel to immobility, a maneuvering unit for starting and s... | 08/18/1998 |
| 5757286 | Method and a device for the registration of the movement of a vehicle A device and method for registering the displacement of a vehicle using a video camera device located above the ground and including a pair of cameras spaced parallel to the ground and directed to record on their respective image planes areas of the groun... | 05/26/1998 |
| 5640164 | System for the transmission of information by microwaves and a communication device to be used in such a system A system for communication by means of microwaves between transponders (3) and a central unit (5) is described. It is primarily characterized by a communication unit (4) for directed communication at a relatively short distance with the transponders (3) a... | 06/17/1997 |
| 5552790 | Device for wireless transfer of information A device for wireless transfer of information includes a data carrier in the form of a thin card, and a transponder that receives a first microwave signal, modulates it and codes it with data, and reradiates a second microwave signal without adding new en... | 09/03/1996 |
