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PORTLAND IRON WORKS

Overview
  • Total Patents
    16
About

PORTLAND IRON WORKS has a total of 16 patent applications. Its first patent ever was published in 1913. It filed its patents most often in United States, Canada and Australia. Its main competitors in its focus markets machine tools, machines and packaging and shipping are FILER AND STOWELL COMPANY, STORTI G and JONES AARON U.

Patent filings in countries

World map showing PORTLAND IRON WORKSs patent filings in countries
# Country Total Patents
#1 United States 8
#2 Canada 6
#3 Australia 1
#4 Germany 1

Patent filings per year

Chart showing PORTLAND IRON WORKSs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Pearson Harry C 12
#2 Pearson H 1
#3 Chester Pearston Harry 1
#4 Wolff Andre J 1
#5 Mcclure Edward E 1
#6 Pearson H C 1

Latest patents

Publication Filing date Title
US4414875A Gang saw apparatus
US3703915A Thin kerf saw machinery
US3299917A Circular saw
US3202189A Saw apparatus
US3139125A Edger picker
US3019882A Lumber feeder
US2714407A Drop saw lumber trimming machine
US1102419A Key-operated actuating mechanism for engine-gangs.
CA760753A Circular saw
CA556082A Drop saw lumber trimming machine
CA742508A Saw apparatus
CA696455A Edger picker