The first match was accidentally discovered in 1826 when John Walker scraped a stick with chemicals on the end against a stone floor.
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| Application No. | Application Title | Issue Date |
| 20090089886 | Adjustable Feature Access for a Controlled Environmental System The present invention provides apparatuses and methods for restricting access to a control unit in an environmental system based on a lock level. The control unit (e.g., a thermostat) is configured with a selected lock level, where each lock level is mapped to an associ... | 04/02/2009 |
| 20090079577 | Adjusting a Communications Channel Between Control Unit and Remote Sensor The present invention provides apparatuses and systems for adjusting a communication channel between a control unit and a remote sensor. A system may include a control unit that controls an environmental unit and a remote sensor that provides data about an environmental... | 03/26/2009 |