| http://www.w3.org/ns/prov#value | - However, such instruments as those references show are not meant to be limiting with respect to the incorporation and use of the present invention.Instrument 10 might also utilize a suitable optical element 24, such as a reflector, light guide, lens, protective cover, or other element for focusing, guiding, or otherwise manipulating the light generated by light engine 18, or for protecting the lig
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