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DAVID DENIS WILLIAMS

Overview
  • Total Patents
    14
About

DAVID DENIS WILLIAMS has a total of 14 patent applications. Its first patent ever was published in 1919. It filed its patents most often in United Kingdom. Its main competitors in its focus markets civil engineering, transport and measurement are ENZESFELD CARO METALLWERKE AG, VOSSLOH COGIFER SA and JOHANN OTTO.

Patent filings in countries

World map showing DAVID DENIS WILLIAMSs patent filings in countries
# Country Total Patents
#1 United Kingdom 14

Patent filings per year

Chart showing DAVID DENIS WILLIAMSs patent filings per year from 1900 to 2020

Latest patents

Publication Filing date Title
GB440970A Improvements in and relating to bush bearings
GB437689A Improvements in rail anchors
GB415153A Improvements in or relating to railway and like switch points
GB386390A Improvements in and relating to railway track gauges
GB378168A Improvements in and relating to fish plate joints for permanent way rails
GB365803A Improvements in and relating to railway fish plates
GB323557A Improvements in and relating to wooden railway sleepers
GB312958A Improvements in and relating to the application of lubricant to the flanges of locomotive and other flanged wheels
GB256434A Improvements in and relating to railway and like rails
GB261889A Improvements in and relating to gates
GB238785A Improvements in presses for manufacturing spring wedges or keys for railway permanent ways or the like
GB205739A An improved operating-force measuring device for railway points or switches
GB180812A Improvements relating to steam superheaters
GB154381A Improvements in facing point lock bar clips for railways