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SPENCE LEWIS C

Overview
  • Total Patents
    17
About

SPENCE LEWIS C has a total of 17 patent applications. Its first patent ever was published in 1969. It filed its patents most often in United States, Canada and WIPO (World Intellectual Property Organization). Its main competitors in its focus markets basic communication technologies, measurement and telecommunications are PAGE IRVING H, ELECTROACUSTIC HECHT UND SCHMI and RADIO TRANSMISSION EQUIPMENT L.

Patent filings per year

Chart showing SPENCE LEWIS Cs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Spence Lewis C 15
#2 Martin Stephen J 3
#3 Spence L C 1
#4 Martin Stephen 1
#5 Martin S J 1

Latest patents

Publication Filing date Title
US4739333A Single channel distance measuring receiver system and method
US4692715A Constant frequency signal generator circuit and method
GB8515420D0 Distance measuring receiver system and method
CA1155531A Dual continuous wave carrier signals distance measuring system
WO8300563A1 Continuous wave carrier signals distance measuring system and method
WO8204167A1 Band-pass filter and gain stage
CA1168321A Band-pass filter and gain stage
US4283726A Dual frequency distance measuring system
US4268807A Band-pass filter and gain stage
US4182996A Magnetic R.F. power splitter and power combiner
US3681705A Circuit and method for enhancement of signal-noise ratio