...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 7545326 | Wireless tracking system and method with multipath error mitigation A system (50) and method (300) for providing multipath error mitigation for real-time wireless tracking of an object (100) is disclosed herein. A plurality of sensor readings are obtained from a tag (60) attached to an object (100)... | 06/09/2009 |
| 7504928 | Wireless tracking system and method utilizing tags with variable power level transmissions The present invention provides a solution to mistaken location calculations based on multipath effects. The present invention utilizes tags attached to objects that transmit signals at various power levels for reception by sensors stationed throughout a facility. Se... | 03/17/2009 |
| 7470234 | Monitoring device, method and system A monitoring device (20) for monitoring the vital signs of a user is disclosed herein. The monitoring device (20) is preferably an article (25) having an optical sensor (30) and a circuitry assembly (35). The monitoring device (... | 12/30/2008 |
| 7468036 | Monitoring device, method and system A monitoring device (20) for monitoring the vital signs of a user is disclosed herein. The monitoring device (20) is preferably an article (25) having an optical sensor (30) and a circuitry assembly (35). The optical sensor (30 | 12/23/2008 |
| D544961 | Heart rate monitor | 06/19/2007 |