Learn more

HARRY S HART

Overview
  • Total Patents
    16
About

HARRY S HART has a total of 16 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 transport and machines are P H MURPHY CO, BAYLOR ARMISTEAD KEITH and MALCHER KONRAD.

Patent filings in countries

World map showing HARRY S HARTs patent filings in countries
# Country Total Patents
#1 United States 16

Patent filings per year

Chart showing HARRY S HARTs patent filings per year from 1900 to 2020

Focus industries

# Industry
#1 Transport
#2 Machines

Top inventors

# Name Total Patents
#1 David Hindahl 12
#2 Hilgerink Frank M 2
#3 Hosceit William J 1
#4 Miller Frank W 1
#5 Hart Harry S 1

Latest patents

Publication Filing date Title
US2076843A Car construction
US2007273A Car construction
US2007272A Car construction
US1862677A Car construction
US1820316A Cleaning apparatus
US1620023A Dump-car-door control
US1617809A Hopper-car end and ladder construction
US1620097A Dump-door mechanism
US1618008A Car construction
US1529837A Maximum-capacity car
US1595397A Cleaning nozzle
US1508550A Dump car
US1548317A Cleaning means
US1504239A Dump car
US1453675A Maximum-capacity railway car
US1446846A Door stop