DEMPSTER MILL MFG COMPANY has a total of 42 patent applications. Its first patent ever was published in 1902. It filed its patents most often in United States. Its main competitors in its focus markets agriculture, engines, pumps and turbines and machines are YETTER MFG, ROCK ISLAND PLOW CO and GALE MFG COMPANY.
# | Country | Total Patents | |
---|---|---|---|
#1 | United States | 42 |
# | Industry | |
---|---|---|
#1 | Agriculture | |
#2 | Engines, pumps and turbines | |
#3 | Machines | |
#4 | Transport | |
#5 | Environmental technology | |
#6 | Civil engineering | |
#7 | Packaging and shipping |
# | Technology | |
---|---|---|
#1 | Crop agriculture | |
#2 | Planting | |
#3 | Pumps | |
#4 | Unspecified technologies | |
#5 | Non-positive-displacement pumps | |
#6 | Vehicles drawn by animals | |
#7 | Wind motors | |
#8 | Reduction of greenhouse gas emissions | |
#9 | Earth drilling | |
#10 | Containers for goods storage |
# | Name | Total Patents |
---|---|---|
#1 | Elliott William | 10 |
#2 | William Elliott | 9 |
#3 | Smethers James A | 6 |
#4 | Schlachter Robert H | 5 |
#5 | Dempster Charles B | 5 |
#6 | Loeber Herman M | 5 |
#7 | Henry Schlachter | 4 |
#8 | Hoag John F | 2 |
#9 | Thomas William | 2 |
#10 | Molony Harry Stuart | 2 |
Publication | Filing date | Title |
---|---|---|
US2857851A | Priming pump | |
US2816509A | Submersible pumps | |
US2772617A | Agricultural implements | |
US2523208A | Seeding apparatus | |
US2347091A | Planting mechanism | |
US2260174A | Combination carrier | |
US2193275A | Dammer attachment for furrow seeders | |
US2231131A | Deep well pump | |
US2045762A | Cleaning and polishing pad for disks | |
US2096230A | Safety trip shovel back | |
US2083073A | Diaphragm pump for automatic water systems | |
US1934488A | Road maintainer | |
US1897434A | Telescoping boring bar for earth boring machines | |
US2023292A | Pressure controlled windmill regulator | |
US1934490A | Combination seed scattering and shovel back device | |
US1897421A | Furrow seeding machine | |
US1871747A | Impeller for centrifugal pumps | |
US1811651A | Primer for impulse pumps | |
US1881717A | Well casing joint | |
US1781670A | Ridge splitter |