ALMOND, Judge.
This is an appeal from the decision of the Patent Office Board of Appeals affirming the rejection on prior art under 35 U.S.C. § 103 of claims 18-21, all the claims remaining in appellant's application entitled "Seal."
The invention is readily understood by reading sole independent claim 18 in conjunction with Figs. 1 and 2 of the drawings, reproduced below:
18. In a floating roof storage...
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