JACKSON, Associate Judge.
The Board of Appeals of the United States Patent Office affirmed the decision of the Primary Examiner in finally rejecting claim 23 of an application for a patent for a method and apparatus for tempering glass sheets. Two method claims were allowed. From the decision of the board this appeal was taken.
The claim was rejected as unpatentable over the patent to Tillyer et al., 1,809,534, June 9, 1931, and reads as follows: "23. In apparatus...
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