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.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 16 |
# | Technology | |
---|---|---|
#1 | Railway bodies | |
#2 | Unspecified technologies | |
#3 | Spraying devices | |
#4 | Vehicle servicing |
# | 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 |
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 |