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BARRETT EDWARD L

Overview
  • Total Patents
    26
About

BARRETT EDWARD L has a total of 26 patent applications. Its first patent ever was published in 1931. It filed its patents most often in United States, Canada and Germany. Its main competitors in its focus markets electrical machinery and energy, environmental technology and audio-visual technology are HALO DATA DEVICES INC, HUMOTECH CO LTD and SANYO SEIMITSU CO LTD.

Patent filings in countries

World map showing BARRETT EDWARD Ls patent filings in countries
# Country Total Patents
#1 United States 18
#2 Canada 6
#3 Germany 1
#4 Japan 1

Patent filings per year

Chart showing BARRETT EDWARD Ls patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Barrett Edward L 25
#2 Edowaado Eru Baaretsuto 1

Latest patents

Publication Filing date Title
US4307309A Brushless dynamoelectric machine
US4260925A Stator for an electromagnetic transducer
US4225798A Permanent magnet motor
CA1070366A Permanent magnetic motor for vehicle door window
US3953753A Three phase alternators
US3493800A Brushless alternator
US2812378A Battery construction
US2739179A Battery plate and method of making it
US2886620A Method and apparatus for making positive battery plates
US2713080A Battery and filling arrangement therefor
US2755329A Closure for alkali batteries
US2763706A Battery construction
US2668920A Antenna rotator
US2553292A Dynamoelectric machine
US2543483A Magnetic recording apparatus
US2551198A Record mechanism
US2428002A Wire type recording and reproducing apparatus
US2327163A Radio antenna
US1993988A Power transmission device
CA448802A Wire type recording and reproducing apparatus