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 |
| D558410 | Wet and dry vacuum cleaner appliance | 12/25/2007 |
| D556841 | Plyometric exercise apparatus | 12/04/2007 |
| 7291195 | Durable filter cage for air-moving system The disclosure provides a system having a cage mounted in an air-moving system, such as a wet and dry vacuum cleaner, which provides energy-absorbing structural ribbing for a more robust cage. The energy-absorbing ribs can tolerate impacts better than the relatively... | 11/06/2007 |
| 7290447 | Density measuring apparatus containing a densimeter and a method of using the same in a pipeline A densimeter contains an inlet pipe section, a second pipe section joined to the downstream end of the inlet pipe section, and an outlet pipe section joined to the downstream end of the second pipe section. The inlet and outlet pipe sections are constrained by a sup... | 11/06/2007 |
| 7288146 | Titanium dioxide pigment coated with hollow bodies and method for its manufacture A coated titanium dioxide pigment with good opacity and simultaneously good retention for use in decorative laminating paper characterized by a surface coating containing aluminum oxide phosphate and attached hollow bodies, e.g., hollow microbodies. A manufacturing ... | 10/30/2007 |
| 7288072 | User interface for automated diagnostic hearing test Method and system are disclosed for a multimedia user interface for an automated diagnostic hearing test. The user interface provides a means for a patient to interact with the automated hearing test to complete each test. The patient is given instructions and guida... | 10/30/2007 |
| 7288071 | Speech discrimination in automated diagnostic hearing test Method and system are disclosed for automated testing of a patient's hearing. The automated hearing test allows the patient to quickly and accurately test his own hearing with minimal or no assistance from an audiologist or other hearing health professionals. The te... | 10/30/2007 |
| 7274243 | Adaptive gate drive for switching devices of inverter An adaptive gate drive for an inverter includes control circuitry having a Field Programmable Gate Array (FPGA) and includes power circuitry having a plurality of FETs for operating a switching device, such as a Trench Gate Insulated Gate Bipolar Transistor (IGBT de... | 09/25/2007 |
| 7272302 | PSC motor system for use in HVAC applications with field adjustment and fail-safe capabilities A field-adjustable motor control system includes a motor, an inverter coupled to provide energization to the motor, a controller coupled to the inverter, and a field adjustment circuit that provides field adjustment signals to the controller. The controller provides... | 09/18/2007 |
| 7263743 | Motor mount assembly A motor mounting assembly includes a motor mount member having a first and second generally opposing sides. A generally U-shaped channel is formed in the second side of the motor mount member extending around its periphery to form a lip extending from the first side... | 09/04/2007 |
| D549533 | Wrench handle for an adjustable wrench | 08/28/2007 |
| D549903 | Vacuum appliance with wall mount | 08/28/2007 |
| D549904 | Vacuum appliance | 08/28/2007 |
| 7255640 | Cable and air management adapter system for enclosures housing electronic equipment The present invention provides a cable-air management adapter system (“CAMAS”) that addresses airflow, heat buildup and cable routing concerns in enclosures that house electronic equipment. The CAMAS allows users to work from a single frame to increase an enclos... | 08/14/2007 |
