In re Hummer

Rich, Judge,

delivered tbe opinion of tbe court:

This is an appeal from the decision of the Patent Office Board of Appeals affirming the rejection of the only remaining claims in appellant’s application which are as follows:

22. A hollow sectional plaster board partition each section composed of two spaced paper sheathed face plaster boards of equal width and laterally offset, and a spacer at each lateral edge comprising a relatively narrow- filler strip of paper sheathed plaster board between and adhesively secured to each face board and having its outer edge disposed midway between the offset…