HATFIELD, Associate Judge.
This is an appeal in a trade-mark opposition proceeding from the decision of the Commissioner of Patents affirming the decision of the Examiner of Interferences sustaining the opposition to the registration by appellant of the trade-mark "Rocklath" for use on plaster boards and plaster wall boards.
In its application, filed October 16, 1925, appellant alleged that it had used its trademark on its goods since June 1, 1925.
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