In Re Van Yzeren

JACKSON, Judge.

The claims of an application of appellant, serial No. 479,466, filed March 17, 1943 alleging “Improvement In Inductance Devices” were subject to the Dual Prosecution practice of the Patent Office.

Claims IT and 12 were prosecuted in Division 10 and claims 13, 16, and 17 in Division 26. The claims were rejected by the respective examiners and their rejection was affirmed by the Board of Appeals of the United States Patent Office. No claims were allowed. From the decision of the board this appeal was taken.

Claims 11 and 13 are considered illustrative of the involved subject matter…