United States. Patent Office & Harshberger, N. P. (1932). In U.S. Court of Customs and Patent Appeals, patent appeal No. 3207, in matter of application of Norman P. Harshberger, improvements in design for roofing; brief for Commissioner of Patents. U.S. Government Printing Office.
Chicago Style (17th ed.) CitationUnited States. Patent Office and Norman P. Harshberger. In U.S. Court of Customs and Patent Appeals, Patent Appeal No. 3207, in Matter of Application of Norman P. Harshberger, Improvements in Design for Roofing; Brief for Commissioner of Patents. [Washington?]: U.S. Government Printing Office, 1932.
MLA (9th ed.) CitationUnited States. Patent Office and Norman P. Harshberger. In U.S. Court of Customs and Patent Appeals, Patent Appeal No. 3207, in Matter of Application of Norman P. Harshberger, Improvements in Design for Roofing; Brief for Commissioner of Patents. U.S. Government Printing Office, 1932.