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D H BONNELLA & SON LTD

Overview
  • Total Patents
    11
About

D H BONNELLA & SON LTD has a total of 11 patent applications. Its first patent ever was published in 1902. It filed its patents most often in United Kingdom, Germany and France. Its main competitors in its focus markets electrical machinery and energy, transport and mechanical elements are PERITUS AB, MERIT ELEKTRIK GMBH and EATON CONTROLS GMBH.

Patent filings in countries

World map showing D H BONNELLA & SON LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 8
#2 Germany 2
#3 France 1

Patent filings per year

Chart showing D H BONNELLA & SON LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Collings Reginald Jeffrey 4
#2 Ayres Frederick Charles 3
#3 Beale Michael Dand 2
#4 White Douglas Thomas 1
#5 Little Philip Vernon 1
#6 Everitt Laurie Harold Raymond 1
#7 Milne Alan John 1
#8 Vernon Little Philip 1

Latest patents

Publication Filing date Title
GB1204960A Improvements relating to rotary switches
GB1155358A Improvements relating to Electrical Switches
GB1160140A Improvements relating to Rotary Switches
GB1030054A Improvements relating to electric switches
GB865538A Improvements in or relating to electric switches
GB865539A Improvements in or relating to electric switches
GB782174A Improvements in electric tumbler switches
GB190207684A Improved Electric Arc Light Mechanism Applicable for Rapid Exposure Photography.