RICH, Judge.
This appeal is from the decision of the Patent Office Board of Appeals, adhered to on reconsideration, affirming the rejection of claims 1 and 10 of appellant's application serial No. 723,810, filed April 24, 1968, entitled "Multi-Concentric Wet Electrostatic Precipitator," for obviousness under 35 U.S.C. § 103. We affirm.
Generally, the wet precipitator includes two concentric cylinders which define an annular space between them. Contaminated...
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