Learn more

DAVENPORT MACHINE TOOL CO INC

Overview
  • Total Patents
    21
About

DAVENPORT MACHINE TOOL CO INC has a total of 21 patent applications. Its first patent ever was published in 1921. It filed its patents most often in United States. Its main competitors in its focus markets machines, machine tools and mechanical elements are POTTER AND JOHNSTON MACHINE COMPANY, ETM ENG TOOL MFG CO LTD and BECHLER ANDRE SA.

Patent filings in countries

World map showing DAVENPORT MACHINE TOOL CO INCs patent filings in countries
# Country Total Patents
#1 United States 21

Patent filings per year

Chart showing DAVENPORT MACHINE TOOL CO INCs patent filings per year from 1900 to 2020

Focus industries

Top inventors

# Name Total Patents
#1 Brinkman Earl W 9
#2 Davenport William S 6
#3 Silva Frederick G 6
#4 Seymour Wray S 4
#5 Kline Edward S 1
#6 Thomas William A 1
#7 Davenport Edith E 1

Latest patents

Publication Filing date Title
US4014558A Chuck-closing mechanism for automatic screw machine
US3541903A Screw machine chuck
US3514116A Expanding collet
US2661663A Punching method and tool
US2572909A Indexing mechanism for machine tools
US2385734A Clutch operating means
US2379545A Cam assembly
US2364169A Automatic screw machine
US2348657A Automatic screw machine
US2277997A Machine for making polygonal openings
US2182939A Automatic work forming machine
US2169089A Clutch mechanism
US2114626A Method and apparatus for threading pieces
US2105618A Method of making collets
US2035942A Feed finger for screw machines and the like
US1885224A Automatic tool machine
US1912515A Automatic machine tool
US1885236A Friction clutch
US1721729A Work-supporting means for machine tools
US1750836A Automatic machine tool