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lens cutaway diagram, designed by
Charles C. Minor and patented in 1916. Redrawn from geometry listed for Figure 2 in US Pat. 1,360,667.
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If the file has been modified from its original state, some details may not fully reflect the modified file.
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I, the copyright holder of this work, hereby publish it under the following license:
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Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.