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One of the earliest readers of microfilm was the Coddington Magnifier. Developed by Sir David Brewster, this magnifier was a "simple plano-convex lens of such thickness that the focus of its spherical curvature coincides with the flat surface of the lens. [2] On June 21, 1859, the first patent for a microfilm was issued to Rene Dargon in France.
Thus, while a "full page magnifier" based on a fresnel lens can span some 625 cm 2 (96.9 sq in) , it typically achieves no more than 1.4x magnification (advertised as "2x" if measured by area instead of the scale factor); an aspheric segment hand magnifier can achieve a scale factor in excess of two (area factor in excess of four) but typically ...
A dome magnifier is a dome-shaped magnifying device made of glass or acrylic plastic, used to enlarge words on a page or computer screen. They are plano-convex lenses : the flat (planar) surface is placed on the object to be magnified, and the convex (dome) surface provides the enlargement.
Conquer even the smallest type with this handy gadget — complete with a light that allows you to read in bed without irking your spouse.
Valuation of patent rights is one of the main activities related to intellectual property management within an organization or company. Indeed, knowing the economic value and importance of the intellectual property rights assists in the strategic decisions to be taken on the company's assets, but also facilitates the commercialization and transactions concerning intellectual property rights.
In 2015, the U.S. government sued EOTech's former parent company, L-3, for civil fraud, accusing it of covering up defects in the sights it knew about as early as 2006.. The first defect was "thermal drift", which causes the aiming point to shift in high or low temperatures by as much as 12" at 300 ya
Below are the primetime rankers for broadcast, cable and premium cable networks in 2024, among total viewers (as well as the top 50 list in adults 18-49).
Diagram of patented device involved in MPP case. The Motion Picture Patents Company (MPP) was the assignee of a number of patents covering motion picture projectors, including US Pat. No. 707,934, on a part of the mechanism used in motion picture Projectors to feed a film through the machine with a regular, uniform, and accurate movement.
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3579 S High St, Columbus, OH · Directions · (614) 409-0683