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ATKINSON LLEWELYN BIRCHALL

Overview
  • Total Patents
    23
About

ATKINSON LLEWELYN BIRCHALL has a total of 23 patent applications. Its first patent ever was published in 1893. It filed its patents most often in United Kingdom, United States and Canada. Its main competitors in its focus markets measurement are ELSTER JOHANNES, GEORGE FREDERICK SHOTTER and WOLLIN VENTURES INC.

Patent filings in countries

World map showing ATKINSON LLEWELYN BIRCHALLs patent filings in countries
# Country Total Patents
#1 United Kingdom 19
#2 United States 3
#3 Canada 1

Patent filings per year

Chart showing ATKINSON LLEWELYN BIRCHALLs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Measurement

Focus technologies

Top inventors

# Name Total Patents
#1 Atkinson Llewelyn Birchall 23
#2 Treharne Frederick Gwilym 1
#3 Lewis Joseph Slater 1

Latest patents

Publication Filing date Title
US868152A Apparatus for measuring the flow of fluids.
GB190512866A Improvements in and relating to Apparatus for Measuring the Flow of Fluids.
GB190318745A Improvements in and relating to Excess Indicators for use with an Electric Current.
US706146A Mechanism for recording or registering the maximum movement of any mechanism.
GB190111235A Improvements in Mechanism for Recording or Registering the Maximum Movement of any Mechanism.
GB190106733A Improvements in Means for Indicating in Hydrometers or Similar Instruments in which Floats are used.
GB190101087A Improvements in Electric Meters.
GB190019213A Improvements in Dynamo Electric Machines and Motors and in Means for Regulating the same.
GB190014893A Improvements in Electrical Measuring Instruments.
US665667A Electrical measuring instrument.
GB189923319A Improvements in Electrical Measuring Instruments.
GB189800835A Improvements in Single Phase and Multiphase Alternate Current Motors.
GB189800834A Improvements in Single Phase Induction Motors.
GB189720781A Improvements in the Generation and Distribution of Electricity by Means of Alternating Currents, and Appliances connected therewith.
GB189608906A Improved Electric Batteries, and Appliances connected therewith.
GB189515174A Improvements in Single Phase and Multiphase Alternate Current Motors.
GB189512301A Improvements in Dynamos, Motors, and Alternators.
GB189511955A Improvements in Internal Combustion Engines.
GB189504352A Improvements in Dynamo Electric Machines and Motors.
GB189425221A Improvements in Dynamo Electric Generators and Motors.