MARTIN, Judge.
This appeal is from the decision of the Patent Office Board of Appeals affirming the final rejection of claims 1, 4, 5 and 7 to 11 inclusive, of application serial No. 558,175 filed January 9, 1956, entitled "Water Stop." Certain claims drawn to more specific structures and to the method of utilizing water stops in masonry structures have been allowed and are not involved in the appeal.
Claims 1 and 7 are representative of the appealed claims...
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