Learn more

JOHN M PERKINS & SMITH LTD

Overview
  • Total Patents
    22
About

JOHN M PERKINS & SMITH LTD has a total of 22 patent applications. Its first patent ever was published in 1951. It filed its patents most often in United Kingdom. Its main competitors in its focus markets machine tools, mechanical elements and machines are REINHOLDT AS H, WESTA WERKZEUGBAU and DUSS MASCHF.

Patent filings in countries

World map showing JOHN M PERKINS & SMITH LTDs patent filings in countries
# Country Total Patents
#1 United Kingdom 22

Patent filings per year

Chart showing JOHN M PERKINS & SMITH LTDs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Perkins John Mervyn 9
#2 Goodwin Joseph Trevor 9
#3 Smith Brian Mumford Alderson 1
#4 May Ronald Ford 1
#5 Smith Colin Alderson 1

Latest patents

Publication Filing date Title
GB1270599A Cutter for tiles and the like
GB1155086A Attachments For Electric Power Tools
GB1142858A Screw anchor devices
GB1155012A A device for Preventing Unauthorised use of Spark Ignition Type Internal Combustion Engines
GB1088003A Load transmitting device
GB1031648A Portable drilling machines
GB1047653A Attachments for use with drilling machines
GB1091052A Transmission mechanisms for power tools
GB1008029A Drill bits
GB948029A Portable drilling machines
GB935545A Mechanism for use in, or with portable drills
GB892523A Drill bits
GB892522A Drill bits
GB891363A Epicyclic reduction gearing
GB913366A Improvements in or relating to fittings for rotary tools
GB872370A A new or improved sharpening device
GB879040A Epicyclic gearing
GB896886A Epicyclic gearing in or for attachments to portable drilling machines
GB776028A Drill bits
GB742280A Expansible bolts