GRAHAM, Presiding Judge.
This is an appeal from the decision of the Board of Appeals of the United States Patent Office, which decision rejected claims 8 and 9 of appellant's application for a patent on alleged improvements in expansion joints. The rejected claims are as follows:
"8. An expansion joint comprising a waterproof binder reenforced throughout with long and short cotton fibers which have been interlocked in a mat-like structure.
"9. Construction...
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