In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Application No. | Application Title | Issue Date |
| 20110155133 | Mask Pressure Regulation in Cpap Treatment and Assisted Respiration by Dynamic Control of Mask Vent Flow An air delivery system includes an air flow generator to provide a pressurized flow of air, a patient interface to provide a seal with the patient's face in use, an air delivery conduit to interconnect the air flow generator and the patient interface, and a controllable... | 06/30/2011 |
| 20100132711 | Blower Motor with Flexible Support Sleeve A double-ended blower includes a blower motor assembly supporting opposed first and second shaft ends. The first and second shaft ends have respective first and second impellers attached thereto and enclosed within first and second volutes, respectively. The first volut... | 06/03/2010 |
| 20090301485 | SINGLE OR MULTIPLE STAGE BLOWER AND NESTED VOLUTE(S) AND OR IMPELLER(S) THEREOF An impeller includes a top shroud, a bottom shroud, and a plurality of vanes extending from the top shroud to the bottom shroud. The top and bottom shrouds are generally planar, and a lower edge of each vane tapers from an outer edge of the bottom shroud to a transverse... | 12/10/2009 |
| 20090246013 | Compact Low Noise Efficient Blower for Cpap Devices A blower for providing a supply of air at positive pressure in the range of approximately 2 cm H2O to 30 cm H2O includes a motor, at least one impeller, and a stationary component. The stationary component includes an inlet and an outlet. The motor... | 10/01/2009 |
| 20090136341 | Single or Multiple Stage Blower and Nested Volute(s) and/or Impeller(s) Therefor A single ended or double-ended blower includes a blower motor assembly supporting opposed first and second shaft ends. The first and second shaft ends have respective first and second impellers attached thereto and enclosed within first and second volutes, respectively.... | 05/28/2009 |