In re Keim

This is an appeal from the decision of the Board of Appeals of the United States Patent Office affirming the rejection by the Primary *785Examiner of claims 37 to 42, inclusive, of appellants’ application for a patent ón a process for sizing paper.

The claims have been treated as a unit throughout the consideration of the case in the Patent Office, and in the briefs before us, and it is evident that they must all stand or fall together. Consideration will therefore be confined .to claim 37, which is illustrative. The claim reads:

37. A process for sizing paper comprising forming a web of cellulosie…