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BRADLEY FRANK R

Overview
  • Total Patents
    18
About

BRADLEY FRANK R has a total of 18 patent applications. Its first patent ever was published in 1965. It filed its patents most often in United States, Canada and Germany. Its main competitors in its focus markets telecommunications, measurement and basic communication technologies are TECTEON PLC, GENERAL TEST SYSTEMS INC and BRADLEY DONALD ANTHONY.

Patent filings in countries

World map showing BRADLEY FRANK Rs patent filings in countries
# Country Total Patents
#1 United States 10
#2 Canada 4
#3 Germany 3
#4 Japan 1

Patent filings per year

Chart showing BRADLEY FRANK Rs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Bradley Frank R 16
#2 Furanku Aaru Buratsudoree 1
#3 R Bradley Frank 1

Latest patents

Publication Filing date Title
US4021625A Instruments and methods for measuring characteristics of only a selected portion of a transmission channel
US3985980A Triggered display for telephone line characteristic measuring instrument
CA1022233A Telephone line characteristic measuring instrument and display
US3927281A Instrument for measuring harmonic distortion in telephone transmission
US3906173A Telephone line characteristic measuring instrument and display
US3478259A Voltage divider with constant source impedance stages
US3443206A Compensation circuits for voltage dividers
US3482126A Electromagnetic indicator
US3519930A Normalization circuits for potentiometer devices using constant source impedance voltage dividers
US3519931A Scaling circuits for voltage dividers of the constant source impedance type
US3443215A Impedance measuring bridge with voltage divider providing constant source impedance to bridge
CA861078A Voltage divider