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DEFIANCE MACHINE WORKS

Overview
  • Total Patents
    85
About

DEFIANCE MACHINE WORKS has a total of 85 patent applications. Its first patent ever was published in 1899. It filed its patents most often in United States and Canada. Its main competitors in its focus markets machine tools, machines and mechanical elements are AMERICAN TOOL WORKS CO, LODGE & SHIPLEY MACHINE TOOL COMPANY and BULLARD MACHINE TOOL COMPANY.

Patent filings in countries

World map showing DEFIANCE MACHINE WORKSs patent filings in countries
# Country Total Patents
#1 United States 72
#2 Canada 13

Patent filings per year

Chart showing DEFIANCE MACHINE WORKSs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Machine tools
#2 Machines
#3 Mechanical elements

Top inventors

# Name Total Patents
#1 Ensign George A 45
#2 Seymour Charles 17
#3 Mccarty William F 5
#4 Colwell Lester V 4
#5 Hall Keith W 3
#6 Islets John C M Des 2
#7 Traub Herbert D 2
#8 Schwartz Harry A 2
#9 Snyder Willis Jay 2
#10 Root Frank T 2

Latest patents

Publication Filing date Title
US1404657A Automatic chucking machine
US1404658A Automatic chucking machine
US1392778A Boring-machine
US1382433A Independent feed rail drill
US1337143A Tenoning and equalizing machine
US1291043A Means for lubricating machine-tools.
US1293611A Means for lubricating machine-tools.
US1302395A Horizontal boring, drilling, milling, and tapping machine.
US1280980A Copying-lathe.
US1277203A Multiple-copying lathe.
US1281771A Wood-turning machine.
US1248095A Spoke-mitering machine.
US1250822A Wheel-rim equalizing and joint-forming machine.
US1268703A Bow-turning machine.
US1256451A Hydraulic-press accelerator.
US1160057A Feed mechanism for sawing-machines.
US1072930A Cutter-head.
US1050695A Bending-machine.
US1042276A Bending-machine.
US1037748A Wheel-rim-jointing machine.