This is a proceeding under Section 4915 of the Revised Statutes, 35 U.S.C.A. § 63, in which the plaintiff seeks to have this Court adjudicate that he is entitled to receive a patent for his claimed invention as specified in claims 1 to 13, inclusive, involved in these proceedings, and authorization for the Commissioner of Patents to issue such patent. This claimed invention relates to a portable electric cooking utensil, and more particularly to certain improvements claimed to be invention over the prior art. The claims here involved were denied by the Examiner in the Patent Office, whose action was affirmed by the Board of Appeals. The patent references cited as showing that the claims are not patentable over the prior art are: Blake, patent No. 2,128,738, Clark, patent No. 1,681,099, Doherty, patent No. 1,990,640, Kuhn, patent No. 756,242, Part, patent No. 2,233,485, and Thomas, patent No. 1,678,885.