Warfield, John2009-12-032009-12-031967-06-27Warfield, J. N. U.S. Patent #3,328,798 1967https://hdl.handle.net/1920/5652Manuscript: typescript with figures, 9 pgs., 8.5" x 11" (21.6 cm x 29.7 cm)Warfield's patent for Double Bridge Network for Producing Signals Having A Modulation Envelope Phase Difference. The original name for the patent was "Electronic Goniometer." Includes schematic and summary narrative. He signed over the patent rights to his employer Wilcox Electric Co., of Kansas City, MO. The original application was filed May 7, 1967 with the Patent Lawyers Hovey, Schmidt, Johnson & Hovey. John N. Warfield Collection 6.4en-USWarfield, John N.Wilcox Electric CompanyOther