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MACPHERSON DUNCAN

Overview
  • Total Patents
    14
About

MACPHERSON DUNCAN has a total of 14 patent applications. Its first patent ever was published in 1896. It filed its patents most often in Canada, United Kingdom and United States. Its main competitors in its focus markets civil engineering and transport are CFC FOERDERSYSTEME GMBH, LAHEY DENNIS E and TAMPER CORP.

Patent filings in countries

World map showing MACPHERSON DUNCANs patent filings in countries
# Country Total Patents
#1 Canada 7
#2 United Kingdom 4
#3 United States 3

Patent filings per year

Chart showing MACPHERSON DUNCANs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Civil engineering
#2 Transport

Focus technologies

# Technology
#1 Machines for making railways
#2 Locomotives

Top inventors

# Name Total Patents
#1 Macpherson Duncan 14

Latest patents

Publication Filing date Title
GB190610678A Improvements in Buttons.
US798814A Shed for engines, &c.
CA96354A Shed for engines, etc.
GB190111606A Improvements in Railway Switches.
CA74007A Railway frog
GB190009320A Improvements in Rail Joints
CA67517A Rail joint
CA64066A Railway switch
US652033A Railway-switch.
US642867A Railway-frog.
CA60549A Railway switch
GB189600983A Improvements in Railway Frogs.
CA36626A Safety switch frog
CA43278A Railway switch