In re Mitchel

This is an appeal from a decision of the Board of Appeals of the United States Patent Office affirming the decision of the examiner which had the effect of denying all the claims (numbered 1 .to 16, inclusive, 20 and 21) of an application for patent for a combined churn and butter worker, obviously designed for use in plants where butter is produced in large quantities.

The brief-filed here by -the Solicitor -for. the Patent .Office succinctly states the issues of the case as follows:

This appeal * * * involves a question of division among three sets of claims specific to three different…