Patents Held By David Blackmer
- U.S. Patent 3,681,618, August 1st 1972: RMS Circuits with Bipolar Logarithmic Converter
- U.S. Patent 3,714,462, January 30th 1973: Multiplier Circuits
- U.S. Patent 4,403,199, September 6th 1983: Gain control systems
- U.S. Patent 6,091,829, July 18th 2000: Microphone apparatus
- U.S. Patent 6,526,149, February 25th 2003: System and method for reducing non linear electrical distortion in an electroacoustic device
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