In re Dalzell

This is an appeal from the decision of the Board of Appeals of the United States Patent Office, affirming the rejection by Primary Examiners of all the claims, numbered 1 to 7, inclusive, of appellants’ application for patent relating to alleged improvements in a heat exchange device, such, for example, as a milk cooler. Claim 7 appears to have been inserted for purposes of appeal to the board after claims

1 to 6 inclusive had been finally rejected by the examiners.

Broadly, the rejection was based on the ground of lack of invention over prior art. The brief for appellants states:

* * * The…