In Re Slepian

GARRETT, Associate Judge.

This proceeding involves five claims, Nos. 22 to 26, inclusive, contained in an application filed by Slepian January 5, 1921, for alleged new and useful improvements in thermionic amplifying devices. Seven claims of the application were allowed by the United States Patent Office. Those at issue were rejected by the Examiner, whose decision was affirmed by the Board of Appeals of the United States Patent Office, and from the decision of the latter the appeal comes to this court.

The claims are divisible into two classes, Nos. 22 and 23 comprising one group, and Nos. 24,…