Patents
Armstrong received 42 patents in total; a selection are listed below:
- U.S. Patent 1,113,149 : "Wireless Receiving System"
- U.S. Patent 1,334,165 : "Electric Wave Transmission" (Note: Co-patentee with Michael I. Pupin)
- U.S. Patent 1,336,378: "Antenna with Distributed Positive Resistance"
- U.S. Patent 1,342,885 : "Method of Receiving High Frequency Oscillation"
- U.S. Patent 1,415,845 : "Selectively Opposing Impedance to Received Electrical Oscillations" (Note: Co-patentee with M. I. Pupin)
- U.S. Patent 1,424,065: "Signaling System"
- U.S. Patent 1,611,848 : "Wireless Receiving System for Continuous Wave"
- U.S. Patent 1,941,066 : "Radio Signaling System" (Note: This is one of the patents issued for wideband FM in 1933.)
- U.S. Patent 1,941,068 : "Radiosignaling" (Note: This is one of the patents issued for wideband FM in 1933.)
- U.S. Patent 1,941,069 : "Radiosignaling" (Note: This is one of the patents issued for wideband FM in 1933.)
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