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DAY GERALD ST JOHN

Overview
  • Total Patents
    22
About

DAY GERALD ST JOHN has a total of 22 patent applications. Its first patent ever was published in 1894. It filed its patents most often in United Kingdom, Canada and Austria. Its main competitors in its focus markets electrical machinery and energy are BAUSCHER METALLUK, HUIYANG ZING EAR IND CO LTD and PACIFIC ELECTRICORD COMPANY.

Patent filings in countries

World map showing DAY GERALD ST JOHNs patent filings in countries
# Country Total Patents
#1 United Kingdom 17
#2 Canada 2
#3 Austria 1
#4 Switzerland 1
#5 United States 1

Patent filings per year

Chart showing DAY GERALD ST JOHNs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Day Gerald St John 21
#2 Allmark Samuel 1
#3 St John Day Gerald 1

Latest patents

Publication Filing date Title
GB115318A Switch Controlling Means for Electric Lamp Holders and like Coupling Devices.
GB191515222A An Improved Combined Electric-lamp Holder and Detachable-shade Support.
GB191508219A Improvements in or relating to Supporting Means for Lamp Shades, Globes, Reflectors, or the like.
GB191423212A Improvements in Electrical Coupling Devices.
GB191416363A Improvements in Electric Lamp Holders or other Coupling Members.
GB191321070A Improvements relating to the Contact Surfaces of Electrical Coupling Devices.
GB191315318A Improvements in Electric Lamp Holders or similar Coupling Members.
GB191312404A Improved Means for Securing Shades, Reflectors, or other Attachments to Electric Lamp Holders and the like.
US1105889A Connector.
CA155340A Electric lamp holder
CA156004A Electrical coupling
GB191308445A Improved Means for Connecting Lamp Holders to Bracket or Pendant Tubes, or the like Wire Conduits.
GB191214306A Improved Terminal Mounting and Cord Gripping Means for Electric Lamp Holders, Adaptors, or the like.
GB191201205A A Combined Electric Wire Connection and Cord Grip.
GB191200750A Improvements relating to Electric Lamp Holders.
GB191120342A Improvements relating to the Conjunction of Cords or Wires with Electrical Apparatus.
GB191114179A Improvements relating to Electrical Coupling Devices.
GB191105442A Improvements in Electrical Contact Making Devices.
GB189907041A Improvements in Electric Arc Lamps.
GB189404849A Improvements in Casings, Culverts, or Means for Supporting and Protecting Electrical Conductors.