SMITH, Judge.
This is an appeal from a decision of the Board of Appeals affirming the rejection of claim 7 of appellant's application for patent for an improvement in a concrete pipe joint, serial No. 613,480, filed October 2, 1956.
As pointed out in the specification, the pipe joint to which the present invention relates is a metal joint designed for joining the ends of abutting sections of concrete pipe. Its purpose is to impart mechanical stability to the...
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