RICH, Judge.
This appeal is from the decision of the Patent Office Board of Appeals affirming the rejection of claims 7 and 10-19 of application serial No. 78,484, filed December 27, 1960, entitled "Optical Devices." Appellant has withdrawn claims 16-19, as to which the appeal will be dismissed. As to the others we affirm.
The only issue is patentability of the claimed subject matter over the following prior art references relied on by the board:
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