Rebuffat v. Crawford

This is an appeal from the decision of the Board of Appeals of the United States Patent Office, affirming that of the Examiner of Interferences, in an interference proceeding in which priority of invention of all the counts involved was awarded to the senior party Crawford.

The invention involved relates to refractory brick and the method of manufacturing the same. Counts 1 and 4 have been regarded, by the tribunals below, as being illustrative of tbe six counts involved and will be so regarded for the purposes of this decision, and they are as follows:

1. A silica brick consisting of tridymite…