JACKSON, Judge.
The Primary Examiner of the United States Patent Office rejected as unpatentable over the prior art, article claims 1 to 4, inclusive, 6, and 7, and method claim 5 of an application for a patent for "Electrical Heating Units," serial No. 435,567, filed March 20, 1942. The Board of Appeals affirmed the decision of the examiner. From that decision, this appeal was taken.
The prior art relied on is as follows:
Ashbaugh, 428...
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