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JOHN T UNDERWOOD

Overview
  • Total Patents
    28
About

JOHN T UNDERWOOD has a total of 28 patent applications. Its first patent ever was published in 1897. It filed its patents most often in United States. Its main competitors in its focus markets textiles and paper, computer technology and machines are WALTHER BUEROMASCH GMBH, VICTOR ADDING MACHINE CO and ELLIOTT FISHER CO.

Patent filings in countries

World map showing JOHN T UNDERWOODs patent filings in countries
# Country Total Patents
#1 United States 28

Patent filings per year

Chart showing JOHN T UNDERWOODs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Jardins Benjamin M Des 5
#2 Main Fred F 4
#3 Hart Frederick A 3
#4 Stickney Burnham C 3
#5 Becker Richard M 2
#6 Harvey Joseph C 2
#7 Barnard Walter E 1
#8 Burridge Lee S 1
#9 Dench William L 1
#10 Marshall Holmes 1

Latest patents

Publication Filing date Title
US1174205A Device for promoting digital dexterity.
US1148663A Type-writing machine.
US1167128A Combined type-writing and computing machine.
US1121808A Combined type-writing and computing machine.
US1152945A Type-writing machine.
US1152944A Type-writing machine.
US1150164A Type-writing machine.
US1152928A Type-writing machine.
US1302464A Computing attachment for type-writers.
US1090444A Clutch.
US1163616A Computing attachment for type-writers.
US1165325A Tabulating and computing attachment for type-writer machines.
US1093298A Type-writing machine.
US1105774A Variable-throw device.
US1110448A Type-writing attachment for adding-machines.
US1146371A Computing-machine.
US1071273A Combined type-writing and computing machine.
US1055480A Type-writing machine.
US1063878A Stand for type-writing machines.
US1157884A Combined type-writing and computing machine.