Did You Know...
...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 8083367 | Emergency exit route illumination system and methods A system and method that helps evacuees exit a building in the event of an emergency such as a smoke event, a fire, an earthquake, a security breach, and/or the presence of unsafe levels of hazardous gasses, using linear illuminators parallel to and near the floor o... | 12/27/2011 |
| 6282737 | Apparatus for alternating pressure of a low air loss patient support Method and apparatus for preventing bed sores in a bedridden patient. A low air loss bed is provided including a frame, a first set of substantially rectangular air bags for supporting a patient thereon mounted transversely on the frame, and a second set ... | 09/04/2001 |
| 6145143 | Patient support systems with layered fluid support mediums A patient support system having multiple patient support layers for reducing and preventing the development of bed sores in bedridden patients. A top patient support surface is provided by an anti-shear cover layer. The anti-shear cover layer being operab... | 11/14/2000 |
