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PORTABLE ADDING MACHINE COMPAN

Overview
  • Total Patents
    16
About

PORTABLE ADDING MACHINE COMPAN has a total of 16 patent applications. Its first patent ever was published in 1925. It filed its patents most often in United States. Its main competitors in its focus markets computer technology and textiles and paper are FRANZ TRINKS DR ING, SCM DEUTSCHLAND and FEILER FEINMECHANIK G M B H W.

Patent filings in countries

World map showing PORTABLE ADDING MACHINE COMPANs patent filings in countries
# Country Total Patents
#1 United States 16

Patent filings per year

Chart showing PORTABLE ADDING MACHINE COMPANs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Computer technology
#2 Textiles and paper

Focus technologies

# Technology
#1 Mechanically computing digital computers
#2 Typewriters

Top inventors

# Name Total Patents
#1 Barrett Glenn J 15
#2 Orin Mapel Clarence 1
#3 Bradt Charles H 1

Latest patents

Publication Filing date Title
US1949446A Adding and listing machine
US1949706A Manual clear signal device for adding machines
US1949445A Adding machine
US1906304A Printing mechanism for listing adding machines
US1947512A Automatic signal for adding machines
US1935609A Total key unlocking means for adding machines
US1951592A Cipher eliminating mechanism
US1812130A Adding and listing machine
US1804736A Manual paper feeding mechanism for adding machines
US1788376A Ribbon feeding and reversing mechanism for adding machines
US1829727A Paper rewind for adding machines
US1812129A Calculating mechanism for adding and listing machines
US1734069A Listing mechanism for adding machines
US1784862A Adding machine
US1812161A Printing mechanism for calculating machines
US1811840A Adding machine