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.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 8 | |
#2 | Canada | 6 | |
#3 | Australia | 1 | |
#4 | Germany | 1 |
# | Industry | |
---|---|---|
#1 | Machine tools | |
#2 | Machines | |
#3 | Packaging and shipping | |
#4 | Transport |
# | Technology | |
---|---|---|
#1 | Unspecified technologies | |
#2 | Wood saws | |
#3 | Sawing | |
#4 | Aeroplanes | |
#5 | Postal sorting | |
#6 | Transport or storage devices |
# | 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 |
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 |