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A US Patent issues without an Office Action despite a broad first claim. There is nothing in the literature or prior art that has a known priority.
Before publication by the USPTO, DeWitt files in Europe and Japan.
With the backing of a family machine tool business, DeWitt Brothers Tool Company, the invention is forwarded to the public in a series of publications, beginning with a paper presented at the International Society for Optical Engineering in January 1987.
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