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"Everyone acquainted with the subject will recognize it as a conspicuous failure."
Henry Morton, president of the Stevens Institute of Technology ; Said in 1880 about the light bulb
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| Number | Title | Issue Date |
| 6695093 | Earplug The present invention provides an earplug formed of a body and a stem member. The body has an insertion end and an opposing second end and further includes a stem channel formed therein. The stem member is disposed within the stem channel of the body so, ... | 02/24/2004 |
| 6276795 | Protective eyewear with adjustable strap Safety eyewear is presented which is provided with particulate and liquid sealing around a frame containing lens/lenses and having temples that provide adjustment of the eyewear to a pantoscopic angle. The eyewear is provided with an adjustable strap asse... | 08/21/2001 |
| 6151717 | Transparent or translucent earmuff cup The present invention provides an earmuff device comprising an earmuff cup having at least a window portion which is formed of an optical material which transmits light rays in such a way that the human eye can see through the material to a degree that an... | 11/28/2000 |
| 6105715 | Multi-color variably attenuating earplug The present invention provides an earplug having a plurality of visual zones. In one embodiment, the earplug includes a first visual zone, a second visual zone, and a third visual zone. The first, second, and third visual zones each comprise continuous lo... | 08/22/2000 |
| 6095146 | Glow-in-the-dark hearing protective devices Hearing protective devices having glow-in-the-dark properties are presented in the present invention. In an exemplary embodiment, the hearing protective device comprises a semi-aural device, an earplug, or an earmuff device. In all embodiments, a glow-in-... | 08/01/2000 |
