In re Langdon

An application, was filed in the United States Patent Office by appellant, for a patent upon certain claimed new and useful improvements in metal protected mirrors. As a result of the proceedings in the office, claims 3 to 16, inclusive, and claims 27 to 33, inclusive, were rejected by the examiner. On appeal, the Board of Appeals reversed the examiner as to claims 15 and 16, and affirmed his decision as to all other claims. Claims 3,4, 9, and 14 are thought to be typical, and are as follows:

3. A mirror comprising a body of light-transmitting medium, an opaque relatively thin reflective…