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DUCO ADDING MACHINE COMPANY

Overview
  • Total Patents
    13
About

DUCO ADDING MACHINE COMPANY has a total of 13 patent applications. Its first patent ever was published in 1911. It filed its patents most often in Germany and United States. Its main competitors in its focus markets computer technology and textiles and paper are ELLIS HALCOLM, REMINGTON ACCOUNTING MACHINE C and ALOIS KNOTZ.

Patent filings in countries

World map showing DUCO ADDING MACHINE COMPANYs patent filings in countries
# Country Total Patents
#1 Germany 8
#2 United States 5

Patent filings per year

Chart showing DUCO ADDING MACHINE COMPANYs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Computer technology
#2 Textiles and paper

Top inventors

# Name Total Patents
#1 Reller Edwin L 5
#2 Meier Albert J 2
#3 Swift William L 2

Latest patents

Publication Filing date Title
US1134694A Paper-feed and platen-operating mechanism for calculating-machines.
US1160742A Clearing and transfer mechanism for calculating-machines.
US1098170A Item-cipher-printing means for calculating-machines.
US1123007A Mechanism for positioning the zero types of accumulator-wheels for printing.
US1095674A Accumulator for calculating-machines.